1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3  * Copyright (c) 2014-2015 Hisilicon Limited.
4  */
5 
6 #include "hns_dsaf_mac.h"
7 #include "hns_dsaf_misc.h"
8 #include "hns_dsaf_ppe.h"
9 #include "hns_dsaf_reg.h"
10 
11 enum _dsm_op_index {
12 	HNS_OP_RESET_FUNC               = 0x1,
13 	HNS_OP_SERDES_LP_FUNC           = 0x2,
14 	HNS_OP_LED_SET_FUNC             = 0x3,
15 	HNS_OP_GET_PORT_TYPE_FUNC       = 0x4,
16 	HNS_OP_GET_SFP_STAT_FUNC        = 0x5,
17 	HNS_OP_LOCATE_LED_SET_FUNC      = 0x6,
18 };
19 
20 enum _dsm_rst_type {
21 	HNS_DSAF_RESET_FUNC     = 0x1,
22 	HNS_PPE_RESET_FUNC      = 0x2,
23 	HNS_XGE_RESET_FUNC      = 0x4,
24 	HNS_GE_RESET_FUNC       = 0x5,
25 	HNS_DSAF_CHN_RESET_FUNC = 0x6,
26 	HNS_ROCE_RESET_FUNC     = 0x7,
27 };
28 
29 static const guid_t hns_dsaf_acpi_dsm_guid =
30 	GUID_INIT(0x1A85AA1A, 0xE293, 0x415E,
31 		  0x8E, 0x28, 0x8D, 0x69, 0x0A, 0x0F, 0x82, 0x0A);
32 
33 static void dsaf_write_sub(struct dsaf_device *dsaf_dev, u32 reg, u32 val)
34 {
35 	if (dsaf_dev->sub_ctrl)
36 		dsaf_write_syscon(dsaf_dev->sub_ctrl, reg, val);
37 	else
38 		dsaf_write_reg(dsaf_dev->sc_base, reg, val);
39 }
40 
41 static u32 dsaf_read_sub(struct dsaf_device *dsaf_dev, u32 reg)
42 {
43 	u32 ret = 0;
44 	int err;
45 
46 	if (dsaf_dev->sub_ctrl) {
47 		err = dsaf_read_syscon(dsaf_dev->sub_ctrl, reg, &ret);
48 		if (err)
49 			dev_err(dsaf_dev->dev, "dsaf_read_syscon error %d!\n",
50 				err);
51 	} else {
52 		ret = dsaf_read_reg(dsaf_dev->sc_base, reg);
53 	}
54 
55 	return ret;
56 }
57 
58 static void hns_dsaf_acpi_ledctrl_by_port(struct hns_mac_cb *mac_cb, u8 op_type,
59                                       u32 link, u32 port, u32 act)
60 {
61        union acpi_object *obj;
62        union acpi_object obj_args[3], argv4;
63 
64        obj_args[0].integer.type = ACPI_TYPE_INTEGER;
65        obj_args[0].integer.value = link;
66        obj_args[1].integer.type = ACPI_TYPE_INTEGER;
67        obj_args[1].integer.value = port;
68        obj_args[2].integer.type = ACPI_TYPE_INTEGER;
69        obj_args[2].integer.value = act;
70 
71        argv4.type = ACPI_TYPE_PACKAGE;
72        argv4.package.count = 3;
73        argv4.package.elements = obj_args;
74 
75        obj = acpi_evaluate_dsm(ACPI_HANDLE(mac_cb->dev),
76                                &hns_dsaf_acpi_dsm_guid, 0, op_type, &argv4);
77        if (!obj) {
78                dev_warn(mac_cb->dev, "ledctrl fail, link:%d port:%d act:%d!\n",
79                         link, port, act);
80                return;
81        }
82 
83        ACPI_FREE(obj);
84 }
85 
86 static void hns_dsaf_acpi_locate_ledctrl_by_port(struct hns_mac_cb *mac_cb,
87 						 u8 op_type, u32 locate,
88 						 u32 port)
89 {
90 	union acpi_object obj_args[2], argv4;
91 	union acpi_object *obj;
92 
93 	obj_args[0].integer.type = ACPI_TYPE_INTEGER;
94 	obj_args[0].integer.value = locate;
95 	obj_args[1].integer.type = ACPI_TYPE_INTEGER;
96 	obj_args[1].integer.value = port;
97 
98 	argv4.type = ACPI_TYPE_PACKAGE;
99 	argv4.package.count = 2;
100 	argv4.package.elements = obj_args;
101 
102 	obj = acpi_evaluate_dsm(ACPI_HANDLE(mac_cb->dev),
103 				&hns_dsaf_acpi_dsm_guid, 0, op_type, &argv4);
104 	if (!obj) {
105 		dev_err(mac_cb->dev, "ledctrl fail, locate:%d port:%d!\n",
106 			locate, port);
107 		return;
108 	}
109 
110 	ACPI_FREE(obj);
111 }
112 
113 static void hns_cpld_set_led(struct hns_mac_cb *mac_cb, int link_status,
114 			     u16 speed, int data)
115 {
116 	int speed_reg = 0;
117 	u8 value;
118 
119 	if (!mac_cb) {
120 		pr_err("sfp_led_opt mac_dev is null!\n");
121 		return;
122 	}
123 	if (!mac_cb->cpld_ctrl) {
124 		dev_err(mac_cb->dev, "mac_id=%d, cpld syscon is null !\n",
125 			mac_cb->mac_id);
126 		return;
127 	}
128 
129 	if (speed == MAC_SPEED_10000)
130 		speed_reg = 1;
131 
132 	value = mac_cb->cpld_led_value;
133 
134 	if (link_status) {
135 		dsaf_set_bit(value, DSAF_LED_LINK_B, link_status);
136 		dsaf_set_field(value, DSAF_LED_SPEED_M,
137 			       DSAF_LED_SPEED_S, speed_reg);
138 		dsaf_set_bit(value, DSAF_LED_DATA_B, data);
139 
140 		if (value != mac_cb->cpld_led_value) {
141 			dsaf_write_syscon(mac_cb->cpld_ctrl,
142 					  mac_cb->cpld_ctrl_reg, value);
143 			mac_cb->cpld_led_value = value;
144 		}
145 	} else {
146 		value = (mac_cb->cpld_led_value) & (0x1 << DSAF_LED_ANCHOR_B);
147 		dsaf_write_syscon(mac_cb->cpld_ctrl,
148 				  mac_cb->cpld_ctrl_reg, value);
149 		mac_cb->cpld_led_value = value;
150 	}
151 }
152 
153 static void hns_cpld_set_led_acpi(struct hns_mac_cb *mac_cb, int link_status,
154                             u16 speed, int data)
155 {
156        if (!mac_cb) {
157                pr_err("cpld_led_set mac_cb is null!\n");
158                return;
159        }
160 
161        hns_dsaf_acpi_ledctrl_by_port(mac_cb, HNS_OP_LED_SET_FUNC,
162                link_status, mac_cb->mac_id, data);
163 }
164 
165 static void cpld_led_reset(struct hns_mac_cb *mac_cb)
166 {
167 	if (!mac_cb || !mac_cb->cpld_ctrl)
168 		return;
169 
170 	dsaf_write_syscon(mac_cb->cpld_ctrl, mac_cb->cpld_ctrl_reg,
171 			  CPLD_LED_DEFAULT_VALUE);
172 	mac_cb->cpld_led_value = CPLD_LED_DEFAULT_VALUE;
173 }
174 
175 static void cpld_led_reset_acpi(struct hns_mac_cb *mac_cb)
176 {
177        if (!mac_cb) {
178                pr_err("cpld_led_reset mac_cb is null!\n");
179                return;
180        }
181 
182        if (mac_cb->media_type != HNAE_MEDIA_TYPE_FIBER)
183                 return;
184 
185        hns_dsaf_acpi_ledctrl_by_port(mac_cb, HNS_OP_LED_SET_FUNC,
186                0, mac_cb->mac_id, 0);
187 }
188 
189 static int cpld_set_led_id(struct hns_mac_cb *mac_cb,
190 			   enum hnae_led_state status)
191 {
192 	u32 val = 0;
193 	int ret;
194 
195 	if (!mac_cb->cpld_ctrl)
196 		return 0;
197 
198 	switch (status) {
199 	case HNAE_LED_ACTIVE:
200 		ret = dsaf_read_syscon(mac_cb->cpld_ctrl, mac_cb->cpld_ctrl_reg,
201 				       &val);
202 		if (ret)
203 			return ret;
204 
205 		dsaf_set_bit(val, DSAF_LED_ANCHOR_B, CPLD_LED_ON_VALUE);
206 		dsaf_write_syscon(mac_cb->cpld_ctrl, mac_cb->cpld_ctrl_reg,
207 				  val);
208 		mac_cb->cpld_led_value = val;
209 		break;
210 	case HNAE_LED_INACTIVE:
211 		dsaf_set_bit(mac_cb->cpld_led_value, DSAF_LED_ANCHOR_B,
212 			     CPLD_LED_DEFAULT_VALUE);
213 		dsaf_write_syscon(mac_cb->cpld_ctrl, mac_cb->cpld_ctrl_reg,
214 				  mac_cb->cpld_led_value);
215 		break;
216 	default:
217 		dev_err(mac_cb->dev, "invalid led state: %d!", status);
218 		return -EINVAL;
219 	}
220 
221 	return 0;
222 }
223 
224 static int cpld_set_led_id_acpi(struct hns_mac_cb *mac_cb,
225 				enum hnae_led_state status)
226 {
227 	switch (status) {
228 	case HNAE_LED_ACTIVE:
229 		hns_dsaf_acpi_locate_ledctrl_by_port(mac_cb,
230 						     HNS_OP_LOCATE_LED_SET_FUNC,
231 						     CPLD_LED_ON_VALUE,
232 						     mac_cb->mac_id);
233 		break;
234 	case HNAE_LED_INACTIVE:
235 		hns_dsaf_acpi_locate_ledctrl_by_port(mac_cb,
236 						     HNS_OP_LOCATE_LED_SET_FUNC,
237 						     CPLD_LED_DEFAULT_VALUE,
238 						     mac_cb->mac_id);
239 		break;
240 	default:
241 		dev_err(mac_cb->dev, "invalid led state: %d!", status);
242 		return -EINVAL;
243 	}
244 
245 	return 0;
246 }
247 
248 #define RESET_REQ_OR_DREQ 1
249 
250 static void hns_dsaf_acpi_srst_by_port(struct dsaf_device *dsaf_dev, u8 op_type,
251 				       u32 port_type, u32 port, u32 val)
252 {
253 	union acpi_object *obj;
254 	union acpi_object obj_args[3], argv4;
255 
256 	obj_args[0].integer.type = ACPI_TYPE_INTEGER;
257 	obj_args[0].integer.value = port_type;
258 	obj_args[1].integer.type = ACPI_TYPE_INTEGER;
259 	obj_args[1].integer.value = port;
260 	obj_args[2].integer.type = ACPI_TYPE_INTEGER;
261 	obj_args[2].integer.value = val;
262 
263 	argv4.type = ACPI_TYPE_PACKAGE;
264 	argv4.package.count = 3;
265 	argv4.package.elements = obj_args;
266 
267 	obj = acpi_evaluate_dsm(ACPI_HANDLE(dsaf_dev->dev),
268 				&hns_dsaf_acpi_dsm_guid, 0, op_type, &argv4);
269 	if (!obj) {
270 		dev_warn(dsaf_dev->dev, "reset port_type%d port%d fail!",
271 			 port_type, port);
272 		return;
273 	}
274 
275 	ACPI_FREE(obj);
276 }
277 
278 static void hns_dsaf_rst(struct dsaf_device *dsaf_dev, bool dereset)
279 {
280 	u32 xbar_reg_addr;
281 	u32 nt_reg_addr;
282 
283 	if (!dereset) {
284 		xbar_reg_addr = DSAF_SUB_SC_XBAR_RESET_REQ_REG;
285 		nt_reg_addr = DSAF_SUB_SC_NT_RESET_REQ_REG;
286 	} else {
287 		xbar_reg_addr = DSAF_SUB_SC_XBAR_RESET_DREQ_REG;
288 		nt_reg_addr = DSAF_SUB_SC_NT_RESET_DREQ_REG;
289 	}
290 
291 	dsaf_write_sub(dsaf_dev, xbar_reg_addr, RESET_REQ_OR_DREQ);
292 	dsaf_write_sub(dsaf_dev, nt_reg_addr, RESET_REQ_OR_DREQ);
293 }
294 
295 static void hns_dsaf_rst_acpi(struct dsaf_device *dsaf_dev, bool dereset)
296 {
297 	hns_dsaf_acpi_srst_by_port(dsaf_dev, HNS_OP_RESET_FUNC,
298 				   HNS_DSAF_RESET_FUNC,
299 				   0, dereset);
300 }
301 
302 static void hns_dsaf_xge_srst_by_port(struct dsaf_device *dsaf_dev, u32 port,
303 				      bool dereset)
304 {
305 	u32 reg_val = 0;
306 	u32 reg_addr;
307 
308 	if (port >= DSAF_XGE_NUM)
309 		return;
310 
311 	reg_val |= RESET_REQ_OR_DREQ;
312 	reg_val |= 0x2082082 << dsaf_dev->mac_cb[port]->port_rst_off;
313 
314 	if (!dereset)
315 		reg_addr = DSAF_SUB_SC_XGE_RESET_REQ_REG;
316 	else
317 		reg_addr = DSAF_SUB_SC_XGE_RESET_DREQ_REG;
318 
319 	dsaf_write_sub(dsaf_dev, reg_addr, reg_val);
320 }
321 
322 static void hns_dsaf_xge_srst_by_port_acpi(struct dsaf_device *dsaf_dev,
323 					   u32 port, bool dereset)
324 {
325 	hns_dsaf_acpi_srst_by_port(dsaf_dev, HNS_OP_RESET_FUNC,
326 				   HNS_XGE_RESET_FUNC, port, dereset);
327 }
328 
329 /**
330  * hns_dsaf_srst_chns - reset dsaf channels
331  * @dsaf_dev: dsaf device struct pointer
332  * @msk: xbar channels mask value:
333  * @dereset: false - request reset , true - drop reset
334  *
335  * bit0-5 for xge0-5
336  * bit6-11 for ppe0-5
337  * bit12-17 for roce0-5
338  * bit18-19 for com/dfx
339  */
340 static void
341 hns_dsaf_srst_chns(struct dsaf_device *dsaf_dev, u32 msk, bool dereset)
342 {
343 	u32 reg_addr;
344 
345 	if (!dereset)
346 		reg_addr = DSAF_SUB_SC_DSAF_RESET_REQ_REG;
347 	else
348 		reg_addr = DSAF_SUB_SC_DSAF_RESET_DREQ_REG;
349 
350 	dsaf_write_sub(dsaf_dev, reg_addr, msk);
351 }
352 
353 /**
354  * hns_dsaf_srst_chns - reset dsaf channels
355  * @dsaf_dev: dsaf device struct pointer
356  * @msk: xbar channels mask value:
357  * @dereset: false - request reset , true - drop reset
358  *
359  * bit0-5 for xge0-5
360  * bit6-11 for ppe0-5
361  * bit12-17 for roce0-5
362  * bit18-19 for com/dfx
363  */
364 static void
365 hns_dsaf_srst_chns_acpi(struct dsaf_device *dsaf_dev, u32 msk, bool dereset)
366 {
367 	hns_dsaf_acpi_srst_by_port(dsaf_dev, HNS_OP_RESET_FUNC,
368 				   HNS_DSAF_CHN_RESET_FUNC,
369 				   msk, dereset);
370 }
371 
372 static void hns_dsaf_roce_srst(struct dsaf_device *dsaf_dev, bool dereset)
373 {
374 	if (!dereset) {
375 		dsaf_write_sub(dsaf_dev, DSAF_SUB_SC_ROCEE_RESET_REQ_REG, 1);
376 	} else {
377 		dsaf_write_sub(dsaf_dev,
378 			       DSAF_SUB_SC_ROCEE_CLK_DIS_REG, 1);
379 		dsaf_write_sub(dsaf_dev,
380 			       DSAF_SUB_SC_ROCEE_RESET_DREQ_REG, 1);
381 		msleep(20);
382 		dsaf_write_sub(dsaf_dev, DSAF_SUB_SC_ROCEE_CLK_EN_REG, 1);
383 	}
384 }
385 
386 static void hns_dsaf_roce_srst_acpi(struct dsaf_device *dsaf_dev, bool dereset)
387 {
388 	hns_dsaf_acpi_srst_by_port(dsaf_dev, HNS_OP_RESET_FUNC,
389 				   HNS_ROCE_RESET_FUNC, 0, dereset);
390 }
391 
392 static void hns_dsaf_ge_srst_by_port(struct dsaf_device *dsaf_dev, u32 port,
393 				     bool dereset)
394 {
395 	u32 reg_val_1;
396 	u32 reg_val_2;
397 	u32 port_rst_off;
398 
399 	if (port >= DSAF_GE_NUM)
400 		return;
401 
402 	if (!HNS_DSAF_IS_DEBUG(dsaf_dev)) {
403 		reg_val_1  = 0x1 << port;
404 		port_rst_off = dsaf_dev->mac_cb[port]->port_rst_off;
405 		/* there is difference between V1 and V2 in register.*/
406 		reg_val_2 = AE_IS_VER1(dsaf_dev->dsaf_ver) ?
407 				0x1041041 : 0x2082082;
408 		reg_val_2 <<= port_rst_off;
409 
410 		if (!dereset) {
411 			dsaf_write_sub(dsaf_dev, DSAF_SUB_SC_GE_RESET_REQ1_REG,
412 				       reg_val_1);
413 
414 			dsaf_write_sub(dsaf_dev, DSAF_SUB_SC_GE_RESET_REQ0_REG,
415 				       reg_val_2);
416 		} else {
417 			dsaf_write_sub(dsaf_dev, DSAF_SUB_SC_GE_RESET_DREQ0_REG,
418 				       reg_val_2);
419 
420 			dsaf_write_sub(dsaf_dev, DSAF_SUB_SC_GE_RESET_DREQ1_REG,
421 				       reg_val_1);
422 		}
423 	} else {
424 		reg_val_1 = 0x15540;
425 		reg_val_2 = AE_IS_VER1(dsaf_dev->dsaf_ver) ? 0x100 : 0x40;
426 
427 		reg_val_1 <<= dsaf_dev->reset_offset;
428 		reg_val_2 <<= dsaf_dev->reset_offset;
429 
430 		if (!dereset) {
431 			dsaf_write_sub(dsaf_dev, DSAF_SUB_SC_GE_RESET_REQ1_REG,
432 				       reg_val_1);
433 
434 			dsaf_write_sub(dsaf_dev, DSAF_SUB_SC_PPE_RESET_REQ_REG,
435 				       reg_val_2);
436 		} else {
437 			dsaf_write_sub(dsaf_dev, DSAF_SUB_SC_GE_RESET_DREQ1_REG,
438 				       reg_val_1);
439 
440 			dsaf_write_sub(dsaf_dev, DSAF_SUB_SC_PPE_RESET_DREQ_REG,
441 				       reg_val_2);
442 		}
443 	}
444 }
445 
446 static void hns_dsaf_ge_srst_by_port_acpi(struct dsaf_device *dsaf_dev,
447 					  u32 port, bool dereset)
448 {
449 	hns_dsaf_acpi_srst_by_port(dsaf_dev, HNS_OP_RESET_FUNC,
450 				   HNS_GE_RESET_FUNC, port, dereset);
451 }
452 
453 static void hns_ppe_srst_by_port(struct dsaf_device *dsaf_dev, u32 port,
454 				 bool dereset)
455 {
456 	u32 reg_val = 0;
457 	u32 reg_addr;
458 
459 	reg_val |= RESET_REQ_OR_DREQ <<	dsaf_dev->mac_cb[port]->port_rst_off;
460 
461 	if (!dereset)
462 		reg_addr = DSAF_SUB_SC_PPE_RESET_REQ_REG;
463 	else
464 		reg_addr = DSAF_SUB_SC_PPE_RESET_DREQ_REG;
465 
466 	dsaf_write_sub(dsaf_dev, reg_addr, reg_val);
467 }
468 
469 static void
470 hns_ppe_srst_by_port_acpi(struct dsaf_device *dsaf_dev, u32 port, bool dereset)
471 {
472 	hns_dsaf_acpi_srst_by_port(dsaf_dev, HNS_OP_RESET_FUNC,
473 				   HNS_PPE_RESET_FUNC, port, dereset);
474 }
475 
476 static void hns_ppe_com_srst(struct dsaf_device *dsaf_dev, bool dereset)
477 {
478 	u32 reg_val;
479 	u32 reg_addr;
480 
481 	if (!(dev_of_node(dsaf_dev->dev)))
482 		return;
483 
484 	if (!HNS_DSAF_IS_DEBUG(dsaf_dev)) {
485 		reg_val = RESET_REQ_OR_DREQ;
486 		if (!dereset)
487 			reg_addr = DSAF_SUB_SC_RCB_PPE_COM_RESET_REQ_REG;
488 		else
489 			reg_addr = DSAF_SUB_SC_RCB_PPE_COM_RESET_DREQ_REG;
490 
491 	} else {
492 		reg_val = 0x100 << dsaf_dev->reset_offset;
493 
494 		if (!dereset)
495 			reg_addr = DSAF_SUB_SC_PPE_RESET_REQ_REG;
496 		else
497 			reg_addr = DSAF_SUB_SC_PPE_RESET_DREQ_REG;
498 	}
499 
500 	dsaf_write_sub(dsaf_dev, reg_addr, reg_val);
501 }
502 
503 /**
504  * hns_mac_get_sds_mode - get phy ifterface form serdes mode
505  * @mac_cb: mac control block
506  * retuen phy interface
507  */
508 static phy_interface_t hns_mac_get_phy_if(struct hns_mac_cb *mac_cb)
509 {
510 	u32 mode;
511 	u32 reg;
512 	bool is_ver1 = AE_IS_VER1(mac_cb->dsaf_dev->dsaf_ver);
513 	int mac_id = mac_cb->mac_id;
514 	phy_interface_t phy_if;
515 
516 	if (is_ver1) {
517 		if (HNS_DSAF_IS_DEBUG(mac_cb->dsaf_dev))
518 			return PHY_INTERFACE_MODE_SGMII;
519 
520 		if (mac_id >= 0 && mac_id <= 3)
521 			reg = HNS_MAC_HILINK4_REG;
522 		else
523 			reg = HNS_MAC_HILINK3_REG;
524 	} else{
525 		if (!HNS_DSAF_IS_DEBUG(mac_cb->dsaf_dev) && mac_id <= 3)
526 			reg = HNS_MAC_HILINK4V2_REG;
527 		else
528 			reg = HNS_MAC_HILINK3V2_REG;
529 	}
530 
531 	mode = dsaf_read_sub(mac_cb->dsaf_dev, reg);
532 	if (dsaf_get_bit(mode, mac_cb->port_mode_off))
533 		phy_if = PHY_INTERFACE_MODE_XGMII;
534 	else
535 		phy_if = PHY_INTERFACE_MODE_SGMII;
536 
537 	return phy_if;
538 }
539 
540 static phy_interface_t hns_mac_get_phy_if_acpi(struct hns_mac_cb *mac_cb)
541 {
542 	phy_interface_t phy_if = PHY_INTERFACE_MODE_NA;
543 	union acpi_object *obj;
544 	union acpi_object obj_args, argv4;
545 
546 	obj_args.integer.type = ACPI_TYPE_INTEGER;
547 	obj_args.integer.value = mac_cb->mac_id;
548 
549 	argv4.type = ACPI_TYPE_PACKAGE;
550 	argv4.package.count = 1;
551 	argv4.package.elements = &obj_args;
552 
553 	obj = acpi_evaluate_dsm(ACPI_HANDLE(mac_cb->dev),
554 				&hns_dsaf_acpi_dsm_guid, 0,
555 				HNS_OP_GET_PORT_TYPE_FUNC, &argv4);
556 
557 	if (!obj || obj->type != ACPI_TYPE_INTEGER)
558 		return phy_if;
559 
560 	phy_if = obj->integer.value ?
561 		PHY_INTERFACE_MODE_XGMII : PHY_INTERFACE_MODE_SGMII;
562 
563 	dev_dbg(mac_cb->dev, "mac_id=%d, phy_if=%d\n", mac_cb->mac_id, phy_if);
564 
565 	ACPI_FREE(obj);
566 
567 	return phy_if;
568 }
569 
570 static int hns_mac_get_sfp_prsnt(struct hns_mac_cb *mac_cb, int *sfp_prsnt)
571 {
572 	u32 val = 0;
573 	int ret;
574 
575 	if (!mac_cb->cpld_ctrl)
576 		return -ENODEV;
577 
578 	ret = dsaf_read_syscon(mac_cb->cpld_ctrl,
579 			       mac_cb->cpld_ctrl_reg + MAC_SFP_PORT_OFFSET,
580 			       &val);
581 	if (ret)
582 		return ret;
583 
584 	*sfp_prsnt = !val;
585 	return 0;
586 }
587 
588 static int hns_mac_get_sfp_prsnt_acpi(struct hns_mac_cb *mac_cb, int *sfp_prsnt)
589 {
590 	union acpi_object *obj;
591 	union acpi_object obj_args, argv4;
592 
593 	obj_args.integer.type = ACPI_TYPE_INTEGER;
594 	obj_args.integer.value = mac_cb->mac_id;
595 
596 	argv4.type = ACPI_TYPE_PACKAGE;
597 	argv4.package.count = 1;
598 	argv4.package.elements = &obj_args;
599 
600 	obj = acpi_evaluate_dsm(ACPI_HANDLE(mac_cb->dev),
601 				&hns_dsaf_acpi_dsm_guid, 0,
602 				HNS_OP_GET_SFP_STAT_FUNC, &argv4);
603 
604 	if (!obj || obj->type != ACPI_TYPE_INTEGER)
605 		return -ENODEV;
606 
607 	*sfp_prsnt = obj->integer.value;
608 
609 	ACPI_FREE(obj);
610 
611 	return 0;
612 }
613 
614 /**
615  * hns_mac_config_sds_loopback - set loop back for serdes
616  * @mac_cb: mac control block
617  * @en: enable or disable
618  * return 0 == success
619  */
620 static int hns_mac_config_sds_loopback(struct hns_mac_cb *mac_cb, bool en)
621 {
622 	const u8 lane_id[] = {
623 		0,	/* mac 0 -> lane 0 */
624 		1,	/* mac 1 -> lane 1 */
625 		2,	/* mac 2 -> lane 2 */
626 		3,	/* mac 3 -> lane 3 */
627 		2,	/* mac 4 -> lane 2 */
628 		3,	/* mac 5 -> lane 3 */
629 		0,	/* mac 6 -> lane 0 */
630 		1	/* mac 7 -> lane 1 */
631 	};
632 #define RX_CSR(lane, reg) ((0x4080 + (reg) * 0x0002 + (lane) * 0x0200) * 2)
633 	u64 reg_offset = RX_CSR(lane_id[mac_cb->mac_id], 0);
634 
635 	int sfp_prsnt = 0;
636 	int ret = hns_mac_get_sfp_prsnt(mac_cb, &sfp_prsnt);
637 
638 	if (!mac_cb->phy_dev) {
639 		if (ret)
640 			pr_info("please confirm sfp is present or not\n");
641 		else
642 			if (!sfp_prsnt)
643 				pr_info("no sfp in this eth\n");
644 	}
645 
646 	if (mac_cb->serdes_ctrl) {
647 		u32 origin = 0;
648 
649 		if (!AE_IS_VER1(mac_cb->dsaf_dev->dsaf_ver)) {
650 #define HILINK_ACCESS_SEL_CFG		0x40008
651 			/* hilink4 & hilink3 use the same xge training and
652 			 * xge u adaptor. There is a hilink access sel cfg
653 			 * register to select which one to be configed
654 			 */
655 			if ((!HNS_DSAF_IS_DEBUG(mac_cb->dsaf_dev)) &&
656 			    (mac_cb->mac_id <= 3))
657 				dsaf_write_syscon(mac_cb->serdes_ctrl,
658 						  HILINK_ACCESS_SEL_CFG, 0);
659 			else
660 				dsaf_write_syscon(mac_cb->serdes_ctrl,
661 						  HILINK_ACCESS_SEL_CFG, 3);
662 		}
663 
664 		ret = dsaf_read_syscon(mac_cb->serdes_ctrl, reg_offset,
665 				       &origin);
666 		if (ret)
667 			return ret;
668 
669 		dsaf_set_field(origin, 1ull << 10, 10, en);
670 		dsaf_write_syscon(mac_cb->serdes_ctrl, reg_offset, origin);
671 	} else {
672 		u8 __iomem *base_addr = mac_cb->serdes_vaddr +
673 				(mac_cb->mac_id <= 3 ? 0x00280000 : 0x00200000);
674 		dsaf_set_reg_field(base_addr, reg_offset, 1ull << 10, 10, en);
675 	}
676 
677 	return 0;
678 }
679 
680 static int
681 hns_mac_config_sds_loopback_acpi(struct hns_mac_cb *mac_cb, bool en)
682 {
683 	union acpi_object *obj;
684 	union acpi_object obj_args[3], argv4;
685 
686 	obj_args[0].integer.type = ACPI_TYPE_INTEGER;
687 	obj_args[0].integer.value = mac_cb->mac_id;
688 	obj_args[1].integer.type = ACPI_TYPE_INTEGER;
689 	obj_args[1].integer.value = !!en;
690 
691 	argv4.type = ACPI_TYPE_PACKAGE;
692 	argv4.package.count = 2;
693 	argv4.package.elements = obj_args;
694 
695 	obj = acpi_evaluate_dsm(ACPI_HANDLE(mac_cb->dsaf_dev->dev),
696 				&hns_dsaf_acpi_dsm_guid, 0,
697 				HNS_OP_SERDES_LP_FUNC, &argv4);
698 	if (!obj) {
699 		dev_warn(mac_cb->dsaf_dev->dev, "set port%d serdes lp fail!",
700 			 mac_cb->mac_id);
701 
702 		return -ENOTSUPP;
703 	}
704 
705 	ACPI_FREE(obj);
706 
707 	return 0;
708 }
709 
710 struct dsaf_misc_op *hns_misc_op_get(struct dsaf_device *dsaf_dev)
711 {
712 	struct dsaf_misc_op *misc_op;
713 
714 	misc_op = devm_kzalloc(dsaf_dev->dev, sizeof(*misc_op), GFP_KERNEL);
715 	if (!misc_op)
716 		return NULL;
717 
718 	if (dev_of_node(dsaf_dev->dev)) {
719 		misc_op->cpld_set_led = hns_cpld_set_led;
720 		misc_op->cpld_reset_led = cpld_led_reset;
721 		misc_op->cpld_set_led_id = cpld_set_led_id;
722 
723 		misc_op->dsaf_reset = hns_dsaf_rst;
724 		misc_op->xge_srst = hns_dsaf_xge_srst_by_port;
725 		misc_op->ge_srst = hns_dsaf_ge_srst_by_port;
726 		misc_op->ppe_srst = hns_ppe_srst_by_port;
727 		misc_op->ppe_comm_srst = hns_ppe_com_srst;
728 		misc_op->hns_dsaf_srst_chns = hns_dsaf_srst_chns;
729 		misc_op->hns_dsaf_roce_srst = hns_dsaf_roce_srst;
730 
731 		misc_op->get_phy_if = hns_mac_get_phy_if;
732 		misc_op->get_sfp_prsnt = hns_mac_get_sfp_prsnt;
733 
734 		misc_op->cfg_serdes_loopback = hns_mac_config_sds_loopback;
735 	} else if (is_acpi_node(dsaf_dev->dev->fwnode)) {
736 		misc_op->cpld_set_led = hns_cpld_set_led_acpi;
737 		misc_op->cpld_reset_led = cpld_led_reset_acpi;
738 		misc_op->cpld_set_led_id = cpld_set_led_id_acpi;
739 
740 		misc_op->dsaf_reset = hns_dsaf_rst_acpi;
741 		misc_op->xge_srst = hns_dsaf_xge_srst_by_port_acpi;
742 		misc_op->ge_srst = hns_dsaf_ge_srst_by_port_acpi;
743 		misc_op->ppe_srst = hns_ppe_srst_by_port_acpi;
744 		misc_op->ppe_comm_srst = hns_ppe_com_srst;
745 		misc_op->hns_dsaf_srst_chns = hns_dsaf_srst_chns_acpi;
746 		misc_op->hns_dsaf_roce_srst = hns_dsaf_roce_srst_acpi;
747 
748 		misc_op->get_phy_if = hns_mac_get_phy_if_acpi;
749 		misc_op->get_sfp_prsnt = hns_mac_get_sfp_prsnt_acpi;
750 
751 		misc_op->cfg_serdes_loopback = hns_mac_config_sds_loopback_acpi;
752 	} else {
753 		devm_kfree(dsaf_dev->dev, (void *)misc_op);
754 		misc_op = NULL;
755 	}
756 
757 	return (void *)misc_op;
758 }
759 
760 struct
761 platform_device *hns_dsaf_find_platform_device(struct fwnode_handle *fwnode)
762 {
763 	struct device *dev;
764 
765 	dev = bus_find_device_by_fwnode(&platform_bus_type, fwnode);
766 	return dev ? to_platform_device(dev) : NULL;
767 }
768