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soc: hisilicon: kunpeng_hccs: Add the check for obtaining complete port attribute
[linux-2.6-block.git] / drivers / soc / hisilicon / kunpeng_hccs.c
CommitLineData
886bdf9c
HL		 1// SPDX-License-Identifier: GPL-2.0+
2/*
3 * The Huawei Cache Coherence System (HCCS) is a multi-chip interconnection
4 * bus protocol.
5 *
6 * Copyright (c) 2023 Hisilicon Limited.
7 * Author: Huisong Li <lihuisong@huawei.com>
47f7a255
HL		 8 *
9 * HCCS driver for Kunpeng SoC provides the following features:
10 * - Retrieve the following information about each port:
11 * - port type
12 * - lane mode
13 * - enable
14 * - current lane mode
15 * - link finite state machine
16 * - lane mask
17 * - CRC error count
18 *
19 * - Retrieve the following information about all the ports on the chip or
20 * the die:
21 * - if all enabled ports are in linked
22 * - if all linked ports are in full lane
23 * - CRC error count sum
886bdf9c
HL		 24 */
25#include <linux/acpi.h>
26#include <linux/iopoll.h>
27#include <linux/platform_device.h>
47f7a255 28#include <linux/sysfs.h>
886bdf9c
HL		 29
30#include <acpi/pcc.h>
31
32#include "kunpeng_hccs.h"
33
886bdf9c
HL		 34/*
35 * Arbitrary retries in case the remote processor is slow to respond
36 * to PCC commands
37 */
38#define HCCS_PCC_CMD_WAIT_RETRIES_NUM 500ULL
39#define HCCS_POLL_STATUS_TIME_INTERVAL_US 3
40
47f7a255
HL		 41static struct hccs_port_info *kobj_to_port_info(struct kobject *k)
42{
43 return container_of(k, struct hccs_port_info, kobj);
44}
45
46static struct hccs_die_info *kobj_to_die_info(struct kobject *k)
47{
48 return container_of(k, struct hccs_die_info, kobj);
49}
50
51static struct hccs_chip_info *kobj_to_chip_info(struct kobject *k)
52{
53 return container_of(k, struct hccs_chip_info, kobj);
54}
55
886bdf9c
HL		 56struct hccs_register_ctx {
57 struct device *dev;
58 u8 chan_id;
59 int err;
60};
61
62static acpi_status hccs_get_register_cb(struct acpi_resource *ares,
63 void *context)
64{
65 struct acpi_resource_generic_register *reg;
66 struct hccs_register_ctx *ctx = context;
67
68 if (ares->type != ACPI_RESOURCE_TYPE_GENERIC_REGISTER)
69 return AE_OK;
70
71 reg = &ares->data.generic_reg;
72 if (reg->space_id != ACPI_ADR_SPACE_PLATFORM_COMM) {
73 dev_err(ctx->dev, "Bad register resource.\n");
74 ctx->err = -EINVAL;
75 return AE_ERROR;
76 }
77 ctx->chan_id = reg->access_size;
78
79 return AE_OK;
80}
81
82static int hccs_get_pcc_chan_id(struct hccs_dev *hdev)
83{
84 acpi_handle handle = ACPI_HANDLE(hdev->dev);
85 struct hccs_register_ctx ctx = {0};
86 acpi_status status;
87
e1e720f3
HL		 88 if (!acpi_has_method(handle, METHOD_NAME__CRS)) {
89 dev_err(hdev->dev, "No _CRS method.\n");
886bdf9c 90 return -ENODEV;
e1e720f3 91 }
886bdf9c
HL		 92
93 ctx.dev = hdev->dev;
94 status = acpi_walk_resources(handle, METHOD_NAME__CRS,
95 hccs_get_register_cb, &ctx);
96 if (ACPI_FAILURE(status))
97 return ctx.err;
98 hdev->chan_id = ctx.chan_id;
99
100 return 0;
101}
102
103static void hccs_chan_tx_done(struct mbox_client *cl, void *msg, int ret)
104{
105 if (ret < 0)
106 pr_debug("TX did not complete: CMD sent:0x%x, ret:%d\n",
107 *(u8 *)msg, ret);
108 else
109 pr_debug("TX completed. CMD sent:0x%x, ret:%d\n",
110 *(u8 *)msg, ret);
111}
112
be2f78a8
HL		 113static void hccs_pcc_rx_callback(struct mbox_client *cl, void *mssg)
114{
115 struct hccs_mbox_client_info *cl_info =
116 container_of(cl, struct hccs_mbox_client_info, client);
117
118 complete(&cl_info->done);
119}
120
886bdf9c
HL		 121static void hccs_unregister_pcc_channel(struct hccs_dev *hdev)
122{
123 struct hccs_mbox_client_info *cl_info = &hdev->cl_info;
124
125 if (cl_info->pcc_comm_addr)
126 iounmap(cl_info->pcc_comm_addr);
127 pcc_mbox_free_channel(hdev->cl_info.pcc_chan);
128}
129
130static int hccs_register_pcc_channel(struct hccs_dev *hdev)
131{
132 struct hccs_mbox_client_info *cl_info = &hdev->cl_info;
133 struct mbox_client *cl = &cl_info->client;
134 struct pcc_mbox_chan *pcc_chan;
135 struct device *dev = hdev->dev;
136 int rc;
137
138 cl->dev = dev;
139 cl->tx_block = false;
140 cl->knows_txdone = true;
141 cl->tx_done = hccs_chan_tx_done;
be2f78a8
HL		 142 cl->rx_callback = hdev->verspec_data->rx_callback;
143 init_completion(&cl_info->done);
144
886bdf9c
HL		 145 pcc_chan = pcc_mbox_request_channel(cl, hdev->chan_id);
146 if (IS_ERR(pcc_chan)) {
147 dev_err(dev, "PPC channel request failed.\n");
148 rc = -ENODEV;
149 goto out;
150 }
151 cl_info->pcc_chan = pcc_chan;
152 cl_info->mbox_chan = pcc_chan->mchan;
153
154 /*
155 * pcc_chan->latency is just a nominal value. In reality the remote
156 * processor could be much slower to reply. So add an arbitrary amount
157 * of wait on top of nominal.
158 */
159 cl_info->deadline_us =
160 HCCS_PCC_CMD_WAIT_RETRIES_NUM * pcc_chan->latency;
be2f78a8
HL		 161 if (!hdev->verspec_data->has_txdone_irq &&
162 cl_info->mbox_chan->mbox->txdone_irq) {
886bdf9c
HL		 163 dev_err(dev, "PCC IRQ in PCCT is enabled.\n");
164 rc = -EINVAL;
165 goto err_mbx_channel_free;
be2f78a8
HL		 166 } else if (hdev->verspec_data->has_txdone_irq &&
167 !cl_info->mbox_chan->mbox->txdone_irq) {
168 dev_err(dev, "PCC IRQ in PCCT isn't supported.\n");
169 rc = -EINVAL;
170 goto err_mbx_channel_free;
886bdf9c
HL		 171 }
172
173 if (pcc_chan->shmem_base_addr) {
7d661283
HL		 174 cl_info->pcc_comm_addr = ioremap(pcc_chan->shmem_base_addr,
175 pcc_chan->shmem_size);
886bdf9c 176 if (!cl_info->pcc_comm_addr) {
734add1a 177 dev_err(dev, "Failed to ioremap PCC communication region for channel-%u.\n",
886bdf9c
HL		 178 hdev->chan_id);
179 rc = -ENOMEM;
180 goto err_mbx_channel_free;
181 }
182 }
183
184 return 0;
185
186err_mbx_channel_free:
187 pcc_mbox_free_channel(cl_info->pcc_chan);
188out:
189 return rc;
190}
191
be2f78a8 192static int hccs_wait_cmd_complete_by_poll(struct hccs_dev *hdev)
886bdf9c
HL		 193{
194 struct hccs_mbox_client_info *cl_info = &hdev->cl_info;
7d661283
HL		 195 struct acpi_pcct_shared_memory __iomem *comm_base =
196 cl_info->pcc_comm_addr;
886bdf9c
HL		 197 u16 status;
198 int ret;
199
200 /*
201 * Poll PCC status register every 3us(delay_us) for maximum of
202 * deadline_us(timeout_us) until PCC command complete bit is set(cond)
203 */
204 ret = readw_poll_timeout(&comm_base->status, status,
a46e42c0 205 status & PCC_STATUS_CMD_COMPLETE,
886bdf9c
HL		 206 HCCS_POLL_STATUS_TIME_INTERVAL_US,
207 cl_info->deadline_us);
208 if (unlikely(ret))
209 dev_err(hdev->dev, "poll PCC status failed, ret = %d.\n", ret);
210
211 return ret;
212}
213
be2f78a8
HL		 214static int hccs_wait_cmd_complete_by_irq(struct hccs_dev *hdev)
215{
216 struct hccs_mbox_client_info *cl_info = &hdev->cl_info;
217
218 if (!wait_for_completion_timeout(&cl_info->done,
219 usecs_to_jiffies(cl_info->deadline_us))) {
220 dev_err(hdev->dev, "PCC command executed timeout!\n");
221 return -ETIMEDOUT;
222 }
223
224 return 0;
225}
226
227static inline void hccs_fill_pcc_shared_mem_region(struct hccs_dev *hdev,
228 u8 cmd,
229 struct hccs_desc *desc,
230 void __iomem *comm_space,
231 u16 space_size)
232{
233 struct acpi_pcct_shared_memory tmp = {
234 .signature = PCC_SIGNATURE | hdev->chan_id,
235 .command = cmd,
236 .status = 0,
237 };
238
239 memcpy_toio(hdev->cl_info.pcc_comm_addr, (void *)&tmp,
240 sizeof(struct acpi_pcct_shared_memory));
241
242 /* Copy the message to the PCC comm space */
243 memcpy_toio(comm_space, (void *)desc, space_size);
244}
245
246static inline void hccs_fill_ext_pcc_shared_mem_region(struct hccs_dev *hdev,
247 u8 cmd,
248 struct hccs_desc *desc,
249 void __iomem *comm_space,
250 u16 space_size)
251{
252 struct acpi_pcct_ext_pcc_shared_memory tmp = {
253 .signature = PCC_SIGNATURE | hdev->chan_id,
254 .flags = PCC_CMD_COMPLETION_NOTIFY,
255 .length = HCCS_PCC_SHARE_MEM_BYTES,
256 .command = cmd,
257 };
258
259 memcpy_toio(hdev->cl_info.pcc_comm_addr, (void *)&tmp,
260 sizeof(struct acpi_pcct_ext_pcc_shared_memory));
261
262 /* Copy the message to the PCC comm space */
263 memcpy_toio(comm_space, (void *)desc, space_size);
264}
265
886bdf9c
HL		 266static int hccs_pcc_cmd_send(struct hccs_dev *hdev, u8 cmd,
267 struct hccs_desc *desc)
268{
be2f78a8 269 const struct hccs_verspecific_data *verspec_data = hdev->verspec_data;
886bdf9c 270 struct hccs_mbox_client_info *cl_info = &hdev->cl_info;
886bdf9c 271 struct hccs_fw_inner_head *fw_inner_head;
be2f78a8
HL		 272 void __iomem *comm_space;
273 u16 space_size;
886bdf9c
HL		 274 int ret;
275
be2f78a8
HL		 276 comm_space = cl_info->pcc_comm_addr + verspec_data->shared_mem_size;
277 space_size = HCCS_PCC_SHARE_MEM_BYTES - verspec_data->shared_mem_size;
278 verspec_data->fill_pcc_shared_mem(hdev, cmd, desc,
279 comm_space, space_size);
280 if (verspec_data->has_txdone_irq)
281 reinit_completion(&cl_info->done);
886bdf9c
HL		 282
283 /* Ring doorbell */
284 ret = mbox_send_message(cl_info->mbox_chan, &cmd);
285 if (ret < 0) {
286 dev_err(hdev->dev, "Send PCC mbox message failed, ret = %d.\n",
287 ret);
288 goto end;
289 }
290
be2f78a8 291 ret = verspec_data->wait_cmd_complete(hdev);
886bdf9c
HL		 292 if (ret)
293 goto end;
294
295 /* Copy response data */
be2f78a8 296 memcpy_fromio((void *)desc, comm_space, space_size);
886bdf9c
HL		 297 fw_inner_head = &desc->rsp.fw_inner_head;
298 if (fw_inner_head->retStatus) {
299 dev_err(hdev->dev, "Execute PCC command failed, error code = %u.\n",
300 fw_inner_head->retStatus);
301 ret = -EIO;
302 }
303
304end:
be2f78a8
HL		 305 if (verspec_data->has_txdone_irq)
306 mbox_chan_txdone(cl_info->mbox_chan, ret);
307 else
308 mbox_client_txdone(cl_info->mbox_chan, ret);
886bdf9c
HL		 309 return ret;
310}
311
312static void hccs_init_req_desc(struct hccs_desc *desc)
313{
314 struct hccs_req_desc *req = &desc->req;
315
316 memset(desc, 0, sizeof(*desc));
317 req->req_head.module_code = HCCS_SERDES_MODULE_CODE;
318}
319
320static int hccs_get_dev_caps(struct hccs_dev *hdev)
321{
322 struct hccs_desc desc;
323 int ret;
324
325 hccs_init_req_desc(&desc);
326 ret = hccs_pcc_cmd_send(hdev, HCCS_GET_DEV_CAP, &desc);
327 if (ret) {
328 dev_err(hdev->dev, "Get device capabilities failed, ret = %d.\n",
329 ret);
330 return ret;
331 }
332 memcpy(&hdev->caps, desc.rsp.data, sizeof(hdev->caps));
333
334 return 0;
335}
336
337static int hccs_query_chip_num_on_platform(struct hccs_dev *hdev)
338{
339 struct hccs_desc desc;
340 int ret;
341
342 hccs_init_req_desc(&desc);
343 ret = hccs_pcc_cmd_send(hdev, HCCS_GET_CHIP_NUM, &desc);
344 if (ret) {
345 dev_err(hdev->dev, "query system chip number failed, ret = %d.\n",
346 ret);
347 return ret;
348 }
349
350 hdev->chip_num = *((u8 *)&desc.rsp.data);
351 if (!hdev->chip_num) {
352 dev_err(hdev->dev, "chip num obtained from firmware is zero.\n");
353 return -EINVAL;
354 }
355
356 return 0;
357}
358
359static int hccs_get_chip_info(struct hccs_dev *hdev,
360 struct hccs_chip_info *chip)
361{
362 struct hccs_die_num_req_param *req_param;
363 struct hccs_desc desc;
364 int ret;
365
366 hccs_init_req_desc(&desc);
367 req_param = (struct hccs_die_num_req_param *)desc.req.data;
368 req_param->chip_id = chip->chip_id;
369 ret = hccs_pcc_cmd_send(hdev, HCCS_GET_DIE_NUM, &desc);
370 if (ret)
371 return ret;
372
373 chip->die_num = *((u8 *)&desc.rsp.data);
374
375 return 0;
376}
377
378static int hccs_query_chip_info_on_platform(struct hccs_dev *hdev)
379{
380 struct hccs_chip_info *chip;
381 int ret;
382 u8 idx;
383
384 ret = hccs_query_chip_num_on_platform(hdev);
385 if (ret) {
386 dev_err(hdev->dev, "query chip number on platform failed, ret = %d.\n",
387 ret);
388 return ret;
389 }
390
391 hdev->chips = devm_kzalloc(hdev->dev,
392 hdev->chip_num * sizeof(struct hccs_chip_info),
393 GFP_KERNEL);
394 if (!hdev->chips) {
395 dev_err(hdev->dev, "allocate all chips memory failed.\n");
396 return -ENOMEM;
397 }
398
399 for (idx = 0; idx < hdev->chip_num; idx++) {
400 chip = &hdev->chips[idx];
401 chip->chip_id = idx;
402 ret = hccs_get_chip_info(hdev, chip);
403 if (ret) {
404 dev_err(hdev->dev, "get chip%u info failed, ret = %d.\n",
405 idx, ret);
406 return ret;
407 }
408 chip->hdev = hdev;
409 }
410
411 return 0;
412}
413
414static int hccs_query_die_info_on_chip(struct hccs_dev *hdev, u8 chip_id,
415 u8 die_idx, struct hccs_die_info *die)
416{
417 struct hccs_die_info_req_param *req_param;
418 struct hccs_die_info_rsp_data *rsp_data;
419 struct hccs_desc desc;
420 int ret;
421
422 hccs_init_req_desc(&desc);
423 req_param = (struct hccs_die_info_req_param *)desc.req.data;
424 req_param->chip_id = chip_id;
425 req_param->die_idx = die_idx;
426 ret = hccs_pcc_cmd_send(hdev, HCCS_GET_DIE_INFO, &desc);
427 if (ret)
428 return ret;
429
430 rsp_data = (struct hccs_die_info_rsp_data *)desc.rsp.data;
431 die->die_id = rsp_data->die_id;
432 die->port_num = rsp_data->port_num;
433 die->min_port_id = rsp_data->min_port_id;
434 die->max_port_id = rsp_data->max_port_id;
435 if (die->min_port_id > die->max_port_id) {
436 dev_err(hdev->dev, "min port id(%u) > max port id(%u) on die_idx(%u).\n",
437 die->min_port_id, die->max_port_id, die_idx);
438 return -EINVAL;
439 }
440 if (die->max_port_id > HCCS_DIE_MAX_PORT_ID) {
441 dev_err(hdev->dev, "max port id(%u) on die_idx(%u) is too big.\n",
442 die->max_port_id, die_idx);
443 return -EINVAL;
444 }
445
446 return 0;
447}
448
449static int hccs_query_all_die_info_on_platform(struct hccs_dev *hdev)
450{
451 struct device *dev = hdev->dev;
452 struct hccs_chip_info *chip;
453 struct hccs_die_info *die;
454 u8 i, j;
455 int ret;
456
457 for (i = 0; i < hdev->chip_num; i++) {
458 chip = &hdev->chips[i];
459 if (!chip->die_num)
460 continue;
461
462 chip->dies = devm_kzalloc(hdev->dev,
463 chip->die_num * sizeof(struct hccs_die_info),
464 GFP_KERNEL);
465 if (!chip->dies) {
466 dev_err(dev, "allocate all dies memory on chip%u failed.\n",
467 i);
468 return -ENOMEM;
469 }
470
471 for (j = 0; j < chip->die_num; j++) {
472 die = &chip->dies[j];
473 ret = hccs_query_die_info_on_chip(hdev, i, j, die);
474 if (ret) {
475 dev_err(dev, "get die idx (%u) info on chip%u failed, ret = %d.\n",
476 j, i, ret);
477 return ret;
478 }
479 die->chip = chip;
480 }
481 }
482
483 return 0;
484}
485
486static int hccs_get_bd_info(struct hccs_dev *hdev, u8 opcode,
487 struct hccs_desc *desc,
488 void *buf, size_t buf_len,
489 struct hccs_rsp_head *rsp_head)
490{
491 struct hccs_rsp_head *head;
492 struct hccs_rsp_desc *rsp;
493 int ret;
494
495 ret = hccs_pcc_cmd_send(hdev, opcode, desc);
496 if (ret)
497 return ret;
498
499 rsp = &desc->rsp;
500 head = &rsp->rsp_head;
501 if (head->data_len > buf_len) {
502 dev_err(hdev->dev,
37696fa7 503 "buffer overflow (buf_len = %zu, data_len = %u)!\n",
886bdf9c
HL		 504 buf_len, head->data_len);
505 return -ENOMEM;
506 }
507
508 memcpy(buf, rsp->data, head->data_len);
509 *rsp_head = *head;
510
511 return 0;
512}
513
514static int hccs_get_all_port_attr(struct hccs_dev *hdev,
515 struct hccs_die_info *die,
516 struct hccs_port_attr *attrs, u16 size)
517{
518 struct hccs_die_comm_req_param *req_param;
519 struct hccs_req_head *req_head;
520 struct hccs_rsp_head rsp_head;
521 struct hccs_desc desc;
522 size_t left_buf_len;
523 u32 data_len = 0;
524 u8 start_id;
525 u8 *buf;
526 int ret;
527
528 buf = (u8 *)attrs;
529 left_buf_len = sizeof(struct hccs_port_attr) * size;
530 start_id = die->min_port_id;
531 while (start_id <= die->max_port_id) {
532 hccs_init_req_desc(&desc);
533 req_head = &desc.req.req_head;
534 req_head->start_id = start_id;
535 req_param = (struct hccs_die_comm_req_param *)desc.req.data;
536 req_param->chip_id = die->chip->chip_id;
537 req_param->die_id = die->die_id;
538
539 ret = hccs_get_bd_info(hdev, HCCS_GET_DIE_PORT_INFO, &desc,
540 buf + data_len, left_buf_len, &rsp_head);
541 if (ret) {
542 dev_err(hdev->dev,
543 "get the information of port%u on die%u failed, ret = %d.\n",
544 start_id, die->die_id, ret);
545 return ret;
546 }
547
548 data_len += rsp_head.data_len;
549 left_buf_len -= rsp_head.data_len;
550 if (unlikely(rsp_head.next_id <= start_id)) {
551 dev_err(hdev->dev,
552 "next port id (%u) is not greater than last start id (%u) on die%u.\n",
553 rsp_head.next_id, start_id, die->die_id);
554 return -EINVAL;
555 }
556 start_id = rsp_head.next_id;
557 }
558
192f97fe
HL		 559 if (left_buf_len != 0) {
560 dev_err(hdev->dev, "failed to get the expected port number(%u) attribute.\n",
561 size);
562 return -EINVAL;
563 }
564
886bdf9c
HL		 565 return 0;
566}
567
568static int hccs_get_all_port_info_on_die(struct hccs_dev *hdev,
569 struct hccs_die_info *die)
570{
571 struct hccs_port_attr *attrs;
572 struct hccs_port_info *port;
573 int ret;
574 u8 i;
575
576 attrs = kcalloc(die->port_num, sizeof(struct hccs_port_attr),
577 GFP_KERNEL);
578 if (!attrs)
579 return -ENOMEM;
580
581 ret = hccs_get_all_port_attr(hdev, die, attrs, die->port_num);
582 if (ret)
583 goto out;
584
585 for (i = 0; i < die->port_num; i++) {
586 port = &die->ports[i];
587 port->port_id = attrs[i].port_id;
588 port->port_type = attrs[i].port_type;
589 port->lane_mode = attrs[i].lane_mode;
590 port->enable = attrs[i].enable;
591 port->die = die;
592 }
593
594out:
595 kfree(attrs);
596 return ret;
597}
598
599static int hccs_query_all_port_info_on_platform(struct hccs_dev *hdev)
600{
886bdf9c
HL		 601 struct device *dev = hdev->dev;
602 struct hccs_chip_info *chip;
603 struct hccs_die_info *die;
604 u8 i, j;
605 int ret;
606
607 for (i = 0; i < hdev->chip_num; i++) {
608 chip = &hdev->chips[i];
609 for (j = 0; j < chip->die_num; j++) {
610 die = &chip->dies[j];
611 if (!die->port_num)
612 continue;
613
614 die->ports = devm_kzalloc(dev,
615 die->port_num * sizeof(struct hccs_port_info),
616 GFP_KERNEL);
617 if (!die->ports) {
618 dev_err(dev, "allocate ports memory on chip%u/die%u failed.\n",
619 i, die->die_id);
620 return -ENOMEM;
621 }
622
623 ret = hccs_get_all_port_info_on_die(hdev, die);
624 if (ret) {
625 dev_err(dev, "get all port info on chip%u/die%u failed, ret = %d.\n",
626 i, die->die_id, ret);
627 return ret;
628 }
629 }
630 }
631
632 return 0;
633}
634
635static int hccs_get_hw_info(struct hccs_dev *hdev)
636{
637 int ret;
638
639 ret = hccs_query_chip_info_on_platform(hdev);
640 if (ret) {
641 dev_err(hdev->dev, "query chip info on platform failed, ret = %d.\n",
642 ret);
643 return ret;
644 }
645
646 ret = hccs_query_all_die_info_on_platform(hdev);
647 if (ret) {
648 dev_err(hdev->dev, "query all die info on platform failed, ret = %d.\n",
649 ret);
650 return ret;
651 }
652
653 ret = hccs_query_all_port_info_on_platform(hdev);
654 if (ret) {
655 dev_err(hdev->dev, "query all port info on platform failed, ret = %d.\n",
656 ret);
657 return ret;
658 }
659
660 return 0;
661}
662
47f7a255
HL		 663static int hccs_query_port_link_status(struct hccs_dev *hdev,
664 const struct hccs_port_info *port,
665 struct hccs_link_status *link_status)
666{
667 const struct hccs_die_info *die = port->die;
668 const struct hccs_chip_info *chip = die->chip;
669 struct hccs_port_comm_req_param *req_param;
670 struct hccs_desc desc;
671 int ret;
672
673 hccs_init_req_desc(&desc);
674 req_param = (struct hccs_port_comm_req_param *)desc.req.data;
675 req_param->chip_id = chip->chip_id;
676 req_param->die_id = die->die_id;
677 req_param->port_id = port->port_id;
678 ret = hccs_pcc_cmd_send(hdev, HCCS_GET_PORT_LINK_STATUS, &desc);
679 if (ret) {
680 dev_err(hdev->dev,
681 "get port link status info failed, ret = %d.\n", ret);
682 return ret;
683 }
684
685 *link_status = *((struct hccs_link_status *)desc.rsp.data);
686
687 return 0;
688}
689
690static int hccs_query_port_crc_err_cnt(struct hccs_dev *hdev,
691 const struct hccs_port_info *port,
692 u64 *crc_err_cnt)
693{
694 const struct hccs_die_info *die = port->die;
695 const struct hccs_chip_info *chip = die->chip;
696 struct hccs_port_comm_req_param *req_param;
697 struct hccs_desc desc;
698 int ret;
699
700 hccs_init_req_desc(&desc);
701 req_param = (struct hccs_port_comm_req_param *)desc.req.data;
702 req_param->chip_id = chip->chip_id;
703 req_param->die_id = die->die_id;
704 req_param->port_id = port->port_id;
705 ret = hccs_pcc_cmd_send(hdev, HCCS_GET_PORT_CRC_ERR_CNT, &desc);
706 if (ret) {
707 dev_err(hdev->dev,
708 "get port crc error count failed, ret = %d.\n", ret);
709 return ret;
710 }
711
712 memcpy(crc_err_cnt, &desc.rsp.data, sizeof(u64));
713
714 return 0;
715}
716
717static int hccs_get_die_all_link_status(struct hccs_dev *hdev,
718 const struct hccs_die_info *die,
719 u8 *all_linked)
720{
721 struct hccs_die_comm_req_param *req_param;
722 struct hccs_desc desc;
723 int ret;
724
725 if (die->port_num == 0) {
726 *all_linked = 1;
727 return 0;
728 }
729
730 hccs_init_req_desc(&desc);
731 req_param = (struct hccs_die_comm_req_param *)desc.req.data;
732 req_param->chip_id = die->chip->chip_id;
733 req_param->die_id = die->die_id;
734 ret = hccs_pcc_cmd_send(hdev, HCCS_GET_DIE_PORTS_LINK_STA, &desc);
735 if (ret) {
736 dev_err(hdev->dev,
737 "get link status of all ports failed on die%u, ret = %d.\n",
738 die->die_id, ret);
739 return ret;
740 }
741
742 *all_linked = *((u8 *)&desc.rsp.data);
743
744 return 0;
745}
746
747static int hccs_get_die_all_port_lane_status(struct hccs_dev *hdev,
748 const struct hccs_die_info *die,
749 u8 *full_lane)
750{
751 struct hccs_die_comm_req_param *req_param;
752 struct hccs_desc desc;
753 int ret;
754
755 if (die->port_num == 0) {
756 *full_lane = 1;
757 return 0;
758 }
759
760 hccs_init_req_desc(&desc);
761 req_param = (struct hccs_die_comm_req_param *)desc.req.data;
762 req_param->chip_id = die->chip->chip_id;
763 req_param->die_id = die->die_id;
764 ret = hccs_pcc_cmd_send(hdev, HCCS_GET_DIE_PORTS_LANE_STA, &desc);
765 if (ret) {
766 dev_err(hdev->dev, "get lane status of all ports failed on die%u, ret = %d.\n",
767 die->die_id, ret);
768 return ret;
769 }
770
771 *full_lane = *((u8 *)&desc.rsp.data);
772
773 return 0;
774}
775
776static int hccs_get_die_total_crc_err_cnt(struct hccs_dev *hdev,
777 const struct hccs_die_info *die,
778 u64 *total_crc_err_cnt)
779{
780 struct hccs_die_comm_req_param *req_param;
781 struct hccs_desc desc;
782 int ret;
783
784 if (die->port_num == 0) {
785 *total_crc_err_cnt = 0;
786 return 0;
787 }
788
789 hccs_init_req_desc(&desc);
790 req_param = (struct hccs_die_comm_req_param *)desc.req.data;
791 req_param->chip_id = die->chip->chip_id;
792 req_param->die_id = die->die_id;
793 ret = hccs_pcc_cmd_send(hdev, HCCS_GET_DIE_PORTS_CRC_ERR_CNT, &desc);
794 if (ret) {
795 dev_err(hdev->dev, "get crc error count sum failed on die%u, ret = %d.\n",
796 die->die_id, ret);
797 return ret;
798 }
799
800 memcpy(total_crc_err_cnt, &desc.rsp.data, sizeof(u64));
801
802 return 0;
803}
804
805static ssize_t hccs_show(struct kobject *k, struct attribute *attr, char *buf)
806{
807 struct kobj_attribute *kobj_attr;
808
809 kobj_attr = container_of(attr, struct kobj_attribute, attr);
810
811 return kobj_attr->show(k, kobj_attr, buf);
812}
813
814static const struct sysfs_ops hccs_comm_ops = {
815 .show = hccs_show,
816};
817
818static ssize_t type_show(struct kobject *kobj, struct kobj_attribute *attr,
819 char *buf)
820{
821 const struct hccs_port_info *port = kobj_to_port_info(kobj);
822
823 return sysfs_emit(buf, "HCCS-v%u\n", port->port_type);
824}
825static struct kobj_attribute hccs_type_attr = __ATTR_RO(type);
826
827static ssize_t lane_mode_show(struct kobject *kobj, struct kobj_attribute *attr,
828 char *buf)
829{
830 const struct hccs_port_info *port = kobj_to_port_info(kobj);
831
832 return sysfs_emit(buf, "x%u\n", port->lane_mode);
833}
834static struct kobj_attribute lane_mode_attr = __ATTR_RO(lane_mode);
835
836static ssize_t enable_show(struct kobject *kobj,
837 struct kobj_attribute *attr, char *buf)
838{
839 const struct hccs_port_info *port = kobj_to_port_info(kobj);
840
841 return sysfs_emit(buf, "%u\n", port->enable);
842}
843static struct kobj_attribute port_enable_attr = __ATTR_RO(enable);
844
845static ssize_t cur_lane_num_show(struct kobject *kobj,
846 struct kobj_attribute *attr, char *buf)
847{
848 const struct hccs_port_info *port = kobj_to_port_info(kobj);
849 struct hccs_dev *hdev = port->die->chip->hdev;
850 struct hccs_link_status link_status = {0};
851 int ret;
852
853 mutex_lock(&hdev->lock);
854 ret = hccs_query_port_link_status(hdev, port, &link_status);
855 mutex_unlock(&hdev->lock);
856 if (ret)
857 return ret;
858
859 return sysfs_emit(buf, "%u\n", link_status.lane_num);
860}
861static struct kobj_attribute cur_lane_num_attr = __ATTR_RO(cur_lane_num);
862
863static ssize_t link_fsm_show(struct kobject *kobj,
864 struct kobj_attribute *attr, char *buf)
865{
866 const struct hccs_port_info *port = kobj_to_port_info(kobj);
867 struct hccs_dev *hdev = port->die->chip->hdev;
868 struct hccs_link_status link_status = {0};
869 const struct {
870 u8 link_fsm;
871 char *str;
872 } link_fsm_map[] = {
873 {HCCS_PORT_RESET, "reset"},
874 {HCCS_PORT_SETUP, "setup"},
875 {HCCS_PORT_CONFIG, "config"},
876 {HCCS_PORT_READY, "link-up"},
877 };
878 const char *link_fsm_str = "unknown";
879 size_t i;
880 int ret;
881
882 mutex_lock(&hdev->lock);
883 ret = hccs_query_port_link_status(hdev, port, &link_status);
884 mutex_unlock(&hdev->lock);
885 if (ret)
886 return ret;
887
888 for (i = 0; i < ARRAY_SIZE(link_fsm_map); i++) {
889 if (link_fsm_map[i].link_fsm == link_status.link_fsm) {
890 link_fsm_str = link_fsm_map[i].str;
891 break;
892 }
893 }
894
895 return sysfs_emit(buf, "%s\n", link_fsm_str);
896}
897static struct kobj_attribute link_fsm_attr = __ATTR_RO(link_fsm);
898
899static ssize_t lane_mask_show(struct kobject *kobj,
900 struct kobj_attribute *attr, char *buf)
901{
902 const struct hccs_port_info *port = kobj_to_port_info(kobj);
903 struct hccs_dev *hdev = port->die->chip->hdev;
904 struct hccs_link_status link_status = {0};
905 int ret;
906
907 mutex_lock(&hdev->lock);
908 ret = hccs_query_port_link_status(hdev, port, &link_status);
909 mutex_unlock(&hdev->lock);
910 if (ret)
911 return ret;
912
913 return sysfs_emit(buf, "0x%x\n", link_status.lane_mask);
914}
915static struct kobj_attribute lane_mask_attr = __ATTR_RO(lane_mask);
916
917static ssize_t crc_err_cnt_show(struct kobject *kobj,
918 struct kobj_attribute *attr, char *buf)
919{
920 const struct hccs_port_info *port = kobj_to_port_info(kobj);
921 struct hccs_dev *hdev = port->die->chip->hdev;
922 u64 crc_err_cnt;
923 int ret;
924
925 mutex_lock(&hdev->lock);
926 ret = hccs_query_port_crc_err_cnt(hdev, port, &crc_err_cnt);
927 mutex_unlock(&hdev->lock);
928 if (ret)
929 return ret;
930
931 return sysfs_emit(buf, "%llu\n", crc_err_cnt);
932}
933static struct kobj_attribute crc_err_cnt_attr = __ATTR_RO(crc_err_cnt);
934
935static struct attribute *hccs_port_default_attrs[] = {
936 &hccs_type_attr.attr,
937 &lane_mode_attr.attr,
938 &port_enable_attr.attr,
939 &cur_lane_num_attr.attr,
940 &link_fsm_attr.attr,
941 &lane_mask_attr.attr,
942 &crc_err_cnt_attr.attr,
943 NULL,
944};
945ATTRIBUTE_GROUPS(hccs_port_default);
946
947static const struct kobj_type hccs_port_type = {
948 .sysfs_ops = &hccs_comm_ops,
949 .default_groups = hccs_port_default_groups,
950};
951
952static ssize_t all_linked_on_die_show(struct kobject *kobj,
953 struct kobj_attribute *attr, char *buf)
954{
955 const struct hccs_die_info *die = kobj_to_die_info(kobj);
956 struct hccs_dev *hdev = die->chip->hdev;
957 u8 all_linked;
958 int ret;
959
960 mutex_lock(&hdev->lock);
961 ret = hccs_get_die_all_link_status(hdev, die, &all_linked);
962 mutex_unlock(&hdev->lock);
963 if (ret)
964 return ret;
965
966 return sysfs_emit(buf, "%u\n", all_linked);
967}
968static struct kobj_attribute all_linked_on_die_attr =
969 __ATTR(all_linked, 0444, all_linked_on_die_show, NULL);
970
971static ssize_t linked_full_lane_on_die_show(struct kobject *kobj,
972 struct kobj_attribute *attr,
973 char *buf)
974{
975 const struct hccs_die_info *die = kobj_to_die_info(kobj);
976 struct hccs_dev *hdev = die->chip->hdev;
977 u8 full_lane;
978 int ret;
979
980 mutex_lock(&hdev->lock);
981 ret = hccs_get_die_all_port_lane_status(hdev, die, &full_lane);
982 mutex_unlock(&hdev->lock);
983 if (ret)
984 return ret;
985
986 return sysfs_emit(buf, "%u\n", full_lane);
987}
988static struct kobj_attribute linked_full_lane_on_die_attr =
989 __ATTR(linked_full_lane, 0444, linked_full_lane_on_die_show, NULL);
990
991static ssize_t crc_err_cnt_sum_on_die_show(struct kobject *kobj,
992 struct kobj_attribute *attr,
993 char *buf)
994{
995 const struct hccs_die_info *die = kobj_to_die_info(kobj);
996 struct hccs_dev *hdev = die->chip->hdev;
997 u64 total_crc_err_cnt;
998 int ret;
999
1000 mutex_lock(&hdev->lock);
1001 ret = hccs_get_die_total_crc_err_cnt(hdev, die, &total_crc_err_cnt);
1002 mutex_unlock(&hdev->lock);
1003 if (ret)
1004 return ret;
1005
1006 return sysfs_emit(buf, "%llu\n", total_crc_err_cnt);
1007}
1008static struct kobj_attribute crc_err_cnt_sum_on_die_attr =
1009 __ATTR(crc_err_cnt, 0444, crc_err_cnt_sum_on_die_show, NULL);
1010
1011static struct attribute *hccs_die_default_attrs[] = {
1012 &all_linked_on_die_attr.attr,
1013 &linked_full_lane_on_die_attr.attr,
1014 &crc_err_cnt_sum_on_die_attr.attr,
1015 NULL,
1016};
1017ATTRIBUTE_GROUPS(hccs_die_default);
1018
1019static const struct kobj_type hccs_die_type = {
1020 .sysfs_ops = &hccs_comm_ops,
1021 .default_groups = hccs_die_default_groups,
1022};
1023
1024static ssize_t all_linked_on_chip_show(struct kobject *kobj,
1025 struct kobj_attribute *attr, char *buf)
1026{
1027 const struct hccs_chip_info *chip = kobj_to_chip_info(kobj);
1028 struct hccs_dev *hdev = chip->hdev;
1029 const struct hccs_die_info *die;
1030 u8 all_linked = 1;
1031 u8 i, tmp;
1032 int ret;
1033
1034 mutex_lock(&hdev->lock);
1035 for (i = 0; i < chip->die_num; i++) {
1036 die = &chip->dies[i];
1037 ret = hccs_get_die_all_link_status(hdev, die, &tmp);
1038 if (ret) {
1039 mutex_unlock(&hdev->lock);
1040 return ret;
1041 }
1042 if (tmp != all_linked) {
1043 all_linked = 0;
1044 break;
1045 }
1046 }
1047 mutex_unlock(&hdev->lock);
1048
1049 return sysfs_emit(buf, "%u\n", all_linked);
1050}
1051static struct kobj_attribute all_linked_on_chip_attr =
1052 __ATTR(all_linked, 0444, all_linked_on_chip_show, NULL);
1053
1054static ssize_t linked_full_lane_on_chip_show(struct kobject *kobj,
1055 struct kobj_attribute *attr,
1056 char *buf)
1057{
1058 const struct hccs_chip_info *chip = kobj_to_chip_info(kobj);
1059 struct hccs_dev *hdev = chip->hdev;
1060 const struct hccs_die_info *die;
1061 u8 full_lane = 1;
1062 u8 i, tmp;
1063 int ret;
1064
1065 mutex_lock(&hdev->lock);
1066 for (i = 0; i < chip->die_num; i++) {
1067 die = &chip->dies[i];
1068 ret = hccs_get_die_all_port_lane_status(hdev, die, &tmp);
1069 if (ret) {
1070 mutex_unlock(&hdev->lock);
1071 return ret;
1072 }
1073 if (tmp != full_lane) {
1074 full_lane = 0;
1075 break;
1076 }
1077 }
1078 mutex_unlock(&hdev->lock);
1079
1080 return sysfs_emit(buf, "%u\n", full_lane);
1081}
1082static struct kobj_attribute linked_full_lane_on_chip_attr =
1083 __ATTR(linked_full_lane, 0444, linked_full_lane_on_chip_show, NULL);
1084
1085static ssize_t crc_err_cnt_sum_on_chip_show(struct kobject *kobj,
1086 struct kobj_attribute *attr,
1087 char *buf)
1088{
1089 const struct hccs_chip_info *chip = kobj_to_chip_info(kobj);
1090 u64 crc_err_cnt, total_crc_err_cnt = 0;
1091 struct hccs_dev *hdev = chip->hdev;
1092 const struct hccs_die_info *die;
1093 int ret;
1094 u16 i;
1095
1096 mutex_lock(&hdev->lock);
1097 for (i = 0; i < chip->die_num; i++) {
1098 die = &chip->dies[i];
1099 ret = hccs_get_die_total_crc_err_cnt(hdev, die, &crc_err_cnt);
1100 if (ret) {
1101 mutex_unlock(&hdev->lock);
1102 return ret;
1103 }
1104
1105 total_crc_err_cnt += crc_err_cnt;
1106 }
1107 mutex_unlock(&hdev->lock);
1108
1109 return sysfs_emit(buf, "%llu\n", total_crc_err_cnt);
1110}
1111static struct kobj_attribute crc_err_cnt_sum_on_chip_attr =
1112 __ATTR(crc_err_cnt, 0444, crc_err_cnt_sum_on_chip_show, NULL);
1113
1114static struct attribute *hccs_chip_default_attrs[] = {
1115 &all_linked_on_chip_attr.attr,
1116 &linked_full_lane_on_chip_attr.attr,
1117 &crc_err_cnt_sum_on_chip_attr.attr,
1118 NULL,
1119};
1120ATTRIBUTE_GROUPS(hccs_chip_default);
1121
1122static const struct kobj_type hccs_chip_type = {
1123 .sysfs_ops = &hccs_comm_ops,
1124 .default_groups = hccs_chip_default_groups,
1125};
1126
1127static void hccs_remove_die_dir(struct hccs_die_info *die)
1128{
1129 struct hccs_port_info *port;
1130 u8 i;
1131
1132 for (i = 0; i < die->port_num; i++) {
1133 port = &die->ports[i];
1134 if (port->dir_created)
1135 kobject_put(&port->kobj);
1136 }
1137
1138 kobject_put(&die->kobj);
1139}
1140
1141static void hccs_remove_chip_dir(struct hccs_chip_info *chip)
1142{
1143 struct hccs_die_info *die;
1144 u8 i;
1145
1146 for (i = 0; i < chip->die_num; i++) {
1147 die = &chip->dies[i];
1148 if (die->dir_created)
1149 hccs_remove_die_dir(die);
1150 }
1151
1152 kobject_put(&chip->kobj);
1153}
1154
1155static void hccs_remove_topo_dirs(struct hccs_dev *hdev)
1156{
1157 u8 i;
1158
1159 for (i = 0; i < hdev->chip_num; i++)
1160 hccs_remove_chip_dir(&hdev->chips[i]);
1161}
1162
1163static int hccs_create_hccs_dir(struct hccs_dev *hdev,
1164 struct hccs_die_info *die,
1165 struct hccs_port_info *port)
1166{
1167 int ret;
1168
1169 ret = kobject_init_and_add(&port->kobj, &hccs_port_type,
734add1a 1170 &die->kobj, "hccs%u", port->port_id);
47f7a255
HL		 1171 if (ret) {
1172 kobject_put(&port->kobj);
1173 return ret;
1174 }
1175
1176 return 0;
1177}
1178
1179static int hccs_create_die_dir(struct hccs_dev *hdev,
1180 struct hccs_chip_info *chip,
1181 struct hccs_die_info *die)
1182{
1183 struct hccs_port_info *port;
1184 int ret;
1185 u16 i;
1186
1187 ret = kobject_init_and_add(&die->kobj, &hccs_die_type,
734add1a 1188 &chip->kobj, "die%u", die->die_id);
47f7a255
HL		 1189 if (ret) {
1190 kobject_put(&die->kobj);
1191 return ret;
1192 }
1193
1194 for (i = 0; i < die->port_num; i++) {
1195 port = &die->ports[i];
1196 ret = hccs_create_hccs_dir(hdev, die, port);
1197 if (ret) {
734add1a 1198 dev_err(hdev->dev, "create hccs%u dir failed.\n",
47f7a255
HL		 1199 port->port_id);
1200 goto err;
1201 }
1202 port->dir_created = true;
1203 }
1204
1205 return 0;
1206err:
1207 hccs_remove_die_dir(die);
1208
1209 return ret;
1210}
1211
1212static int hccs_create_chip_dir(struct hccs_dev *hdev,
1213 struct hccs_chip_info *chip)
1214{
1215 struct hccs_die_info *die;
1216 int ret;
1217 u16 id;
1218
1219 ret = kobject_init_and_add(&chip->kobj, &hccs_chip_type,
734add1a 1220 &hdev->dev->kobj, "chip%u", chip->chip_id);
47f7a255
HL		 1221 if (ret) {
1222 kobject_put(&chip->kobj);
1223 return ret;
1224 }
1225
1226 for (id = 0; id < chip->die_num; id++) {
1227 die = &chip->dies[id];
1228 ret = hccs_create_die_dir(hdev, chip, die);
1229 if (ret)
1230 goto err;
1231 die->dir_created = true;
1232 }
1233
1234 return 0;
1235err:
1236 hccs_remove_chip_dir(chip);
1237
1238 return ret;
1239}
1240
1241static int hccs_create_topo_dirs(struct hccs_dev *hdev)
1242{
1243 struct hccs_chip_info *chip;
1244 u8 id, k;
1245 int ret;
1246
1247 for (id = 0; id < hdev->chip_num; id++) {
1248 chip = &hdev->chips[id];
1249 ret = hccs_create_chip_dir(hdev, chip);
1250 if (ret) {
734add1a 1251 dev_err(hdev->dev, "init chip%u dir failed!\n", id);
47f7a255
HL		 1252 goto err;
1253 }
1254 }
1255
1256 return 0;
1257err:
1258 for (k = 0; k < id; k++)
1259 hccs_remove_chip_dir(&hdev->chips[k]);
1260
1261 return ret;
1262}
1263
886bdf9c
HL		 1264static int hccs_probe(struct platform_device *pdev)
1265{
1266 struct acpi_device *acpi_dev;
1267 struct hccs_dev *hdev;
1268 int rc;
1269
1270 if (acpi_disabled) {
1271 dev_err(&pdev->dev, "acpi is disabled.\n");
1272 return -ENODEV;
1273 }
1274 acpi_dev = ACPI_COMPANION(&pdev->dev);
1275 if (!acpi_dev)
1276 return -ENODEV;
1277
1278 hdev = devm_kzalloc(&pdev->dev, sizeof(*hdev), GFP_KERNEL);
1279 if (!hdev)
1280 return -ENOMEM;
1281 hdev->acpi_dev = acpi_dev;
1282 hdev->dev = &pdev->dev;
1283 platform_set_drvdata(pdev, hdev);
1284
be2f78a8
HL		 1285 /*
1286 * Here would never be failure as the driver and device has been matched.
1287 */
1288 hdev->verspec_data = acpi_device_get_match_data(hdev->dev);
1289
886bdf9c
HL		 1290 mutex_init(&hdev->lock);
1291 rc = hccs_get_pcc_chan_id(hdev);
1292 if (rc)
1293 return rc;
1294 rc = hccs_register_pcc_channel(hdev);
1295 if (rc)
1296 return rc;
1297
1298 rc = hccs_get_dev_caps(hdev);
1299 if (rc)
1300 goto unregister_pcc_chan;
1301
1302 rc = hccs_get_hw_info(hdev);
1303 if (rc)
1304 goto unregister_pcc_chan;
1305
47f7a255
HL		 1306 rc = hccs_create_topo_dirs(hdev);
1307 if (rc)
1308 goto unregister_pcc_chan;
1309
886bdf9c
HL		 1310 return 0;
1311
1312unregister_pcc_chan:
1313 hccs_unregister_pcc_channel(hdev);
1314
1315 return rc;
1316}
1317
3f40c999 1318static void hccs_remove(struct platform_device *pdev)
886bdf9c
HL		 1319{
1320 struct hccs_dev *hdev = platform_get_drvdata(pdev);
1321
47f7a255 1322 hccs_remove_topo_dirs(hdev);
886bdf9c 1323 hccs_unregister_pcc_channel(hdev);
886bdf9c
HL		 1324}
1325
be2f78a8
HL		 1326static const struct hccs_verspecific_data hisi04b1_verspec_data = {
1327 .rx_callback = NULL,
1328 .wait_cmd_complete = hccs_wait_cmd_complete_by_poll,
1329 .fill_pcc_shared_mem = hccs_fill_pcc_shared_mem_region,
1330 .shared_mem_size = sizeof(struct acpi_pcct_shared_memory),
1331 .has_txdone_irq = false,
1332};
1333
1334static const struct hccs_verspecific_data hisi04b2_verspec_data = {
1335 .rx_callback = hccs_pcc_rx_callback,
1336 .wait_cmd_complete = hccs_wait_cmd_complete_by_irq,
1337 .fill_pcc_shared_mem = hccs_fill_ext_pcc_shared_mem_region,
1338 .shared_mem_size = sizeof(struct acpi_pcct_ext_pcc_shared_memory),
1339 .has_txdone_irq = true,
1340};
1341
886bdf9c 1342static const struct acpi_device_id hccs_acpi_match[] = {
be2f78a8
HL		 1343 { "HISI04B1", (unsigned long)&hisi04b1_verspec_data},
1344 { "HISI04B2", (unsigned long)&hisi04b2_verspec_data},
1345 { }
886bdf9c
HL		 1346};
1347MODULE_DEVICE_TABLE(acpi, hccs_acpi_match);
1348
1349static struct platform_driver hccs_driver = {
1350 .probe = hccs_probe,
3f40c999 1351 .remove_new = hccs_remove,
886bdf9c
HL		 1352 .driver = {
1353 .name = "kunpeng_hccs",
1354 .acpi_match_table = hccs_acpi_match,
1355 },
1356};
1357
1358module_platform_driver(hccs_driver);
1359
1360MODULE_DESCRIPTION("Kunpeng SoC HCCS driver");
1361MODULE_LICENSE("GPL");
1362MODULE_AUTHOR("Huisong Li <lihuisong@huawei.com>");
Linux 6.x block layer and io_uring tree(s)