1 /*
2  * Copyright 2015 Freescale Semiconductor, Inc.
3  *
4  * SPDX-License-Identifier:	GPL-2.0+
5  */
6 
7 #include <common.h>
8 #include <asm/io.h>
9 #include <netdev.h>
10 #include <fdt_support.h>
11 #include <fm_eth.h>
12 #include <fsl_mdio.h>
13 #include <fsl_dtsec.h>
14 #include <libfdt.h>
15 #include <malloc.h>
16 #include <asm/arch/fsl_serdes.h>
17 
18 #include "../common/qixis.h"
19 #include "../common/fman.h"
20 #include "ls1043aqds_qixis.h"
21 
22 #define EMI_NONE	0xFF
23 #define EMI1_RGMII1	0
24 #define EMI1_RGMII2	1
25 #define EMI1_SLOT1	2
26 #define EMI1_SLOT2	3
27 #define EMI1_SLOT3	4
28 #define EMI1_SLOT4	5
29 #define EMI2		6
30 
31 static int mdio_mux[NUM_FM_PORTS];
32 
33 static const char * const mdio_names[] = {
34 	"LS1043AQDS_MDIO_RGMII1",
35 	"LS1043AQDS_MDIO_RGMII2",
36 	"LS1043AQDS_MDIO_SLOT1",
37 	"LS1043AQDS_MDIO_SLOT2",
38 	"LS1043AQDS_MDIO_SLOT3",
39 	"LS1043AQDS_MDIO_SLOT4",
40 	"NULL",
41 };
42 
43 /* Map SerDes1 4 lanes to default slot, will be initialized dynamically */
44 static u8 lane_to_slot[] = {1, 2, 3, 4};
45 
46 static const char *ls1043aqds_mdio_name_for_muxval(u8 muxval)
47 {
48 	return mdio_names[muxval];
49 }
50 
51 struct mii_dev *mii_dev_for_muxval(u8 muxval)
52 {
53 	struct mii_dev *bus;
54 	const char *name;
55 
56 	if (muxval > EMI2)
57 		return NULL;
58 
59 	name = ls1043aqds_mdio_name_for_muxval(muxval);
60 
61 	if (!name) {
62 		printf("No bus for muxval %x\n", muxval);
63 		return NULL;
64 	}
65 
66 	bus = miiphy_get_dev_by_name(name);
67 
68 	if (!bus) {
69 		printf("No bus by name %s\n", name);
70 		return NULL;
71 	}
72 
73 	return bus;
74 }
75 
76 struct ls1043aqds_mdio {
77 	u8 muxval;
78 	struct mii_dev *realbus;
79 };
80 
81 static void ls1043aqds_mux_mdio(u8 muxval)
82 {
83 	u8 brdcfg4;
84 
85 	if (muxval < 7) {
86 		brdcfg4 = QIXIS_READ(brdcfg[4]);
87 		brdcfg4 &= ~BRDCFG4_EMISEL_MASK;
88 		brdcfg4 |= (muxval << BRDCFG4_EMISEL_SHIFT);
89 		QIXIS_WRITE(brdcfg[4], brdcfg4);
90 	}
91 }
92 
93 static int ls1043aqds_mdio_read(struct mii_dev *bus, int addr, int devad,
94 			      int regnum)
95 {
96 	struct ls1043aqds_mdio *priv = bus->priv;
97 
98 	ls1043aqds_mux_mdio(priv->muxval);
99 
100 	return priv->realbus->read(priv->realbus, addr, devad, regnum);
101 }
102 
103 static int ls1043aqds_mdio_write(struct mii_dev *bus, int addr, int devad,
104 			       int regnum, u16 value)
105 {
106 	struct ls1043aqds_mdio *priv = bus->priv;
107 
108 	ls1043aqds_mux_mdio(priv->muxval);
109 
110 	return priv->realbus->write(priv->realbus, addr, devad,
111 				    regnum, value);
112 }
113 
114 static int ls1043aqds_mdio_reset(struct mii_dev *bus)
115 {
116 	struct ls1043aqds_mdio *priv = bus->priv;
117 
118 	return priv->realbus->reset(priv->realbus);
119 }
120 
121 static int ls1043aqds_mdio_init(char *realbusname, u8 muxval)
122 {
123 	struct ls1043aqds_mdio *pmdio;
124 	struct mii_dev *bus = mdio_alloc();
125 
126 	if (!bus) {
127 		printf("Failed to allocate ls1043aqds MDIO bus\n");
128 		return -1;
129 	}
130 
131 	pmdio = malloc(sizeof(*pmdio));
132 	if (!pmdio) {
133 		printf("Failed to allocate ls1043aqds private data\n");
134 		free(bus);
135 		return -1;
136 	}
137 
138 	bus->read = ls1043aqds_mdio_read;
139 	bus->write = ls1043aqds_mdio_write;
140 	bus->reset = ls1043aqds_mdio_reset;
141 	strcpy(bus->name, ls1043aqds_mdio_name_for_muxval(muxval));
142 
143 	pmdio->realbus = miiphy_get_dev_by_name(realbusname);
144 
145 	if (!pmdio->realbus) {
146 		printf("No bus with name %s\n", realbusname);
147 		free(bus);
148 		free(pmdio);
149 		return -1;
150 	}
151 
152 	pmdio->muxval = muxval;
153 	bus->priv = pmdio;
154 	return mdio_register(bus);
155 }
156 
157 void board_ft_fman_fixup_port(void *fdt, char *compat, phys_addr_t addr,
158 			      enum fm_port port, int offset)
159 {
160 	struct fixed_link f_link;
161 
162 	if (fm_info_get_enet_if(port) == PHY_INTERFACE_MODE_SGMII) {
163 		if (port == FM1_DTSEC9) {
164 			fdt_set_phy_handle(fdt, compat, addr,
165 					   "sgmii_riser_s1_p1");
166 		} else if (port == FM1_DTSEC2) {
167 			fdt_set_phy_handle(fdt, compat, addr,
168 					   "sgmii_riser_s2_p1");
169 		} else if (port == FM1_DTSEC5) {
170 			fdt_set_phy_handle(fdt, compat, addr,
171 					   "sgmii_riser_s3_p1");
172 		} else if (port == FM1_DTSEC6) {
173 			fdt_set_phy_handle(fdt, compat, addr,
174 					   "sgmii_riser_s4_p1");
175 		}
176 	} else if (fm_info_get_enet_if(port) ==
177 		   PHY_INTERFACE_MODE_SGMII_2500) {
178 		/* 2.5G SGMII interface */
179 		f_link.phy_id = port;
180 		f_link.duplex = 1;
181 		f_link.link_speed = 1000;
182 		f_link.pause = 0;
183 		f_link.asym_pause = 0;
184 		/* no PHY for 2.5G SGMII */
185 		fdt_delprop(fdt, offset, "phy-handle");
186 		fdt_setprop(fdt, offset, "fixed-link", &f_link, sizeof(f_link));
187 		fdt_setprop_string(fdt, offset, "phy-connection-type",
188 				   "sgmii-2500");
189 	} else if (fm_info_get_enet_if(port) == PHY_INTERFACE_MODE_QSGMII) {
190 		switch (mdio_mux[port]) {
191 		case EMI1_SLOT1:
192 			switch (port) {
193 			case FM1_DTSEC1:
194 				fdt_set_phy_handle(fdt, compat, addr,
195 						   "qsgmii_s1_p1");
196 				break;
197 			case FM1_DTSEC2:
198 				fdt_set_phy_handle(fdt, compat, addr,
199 						   "qsgmii_s1_p2");
200 				break;
201 			case FM1_DTSEC5:
202 				fdt_set_phy_handle(fdt, compat, addr,
203 						   "qsgmii_s1_p3");
204 				break;
205 			case FM1_DTSEC6:
206 				fdt_set_phy_handle(fdt, compat, addr,
207 						   "qsgmii_s1_p4");
208 				break;
209 			default:
210 				break;
211 			}
212 			break;
213 		case EMI1_SLOT2:
214 			switch (port) {
215 			case FM1_DTSEC1:
216 				fdt_set_phy_handle(fdt, compat, addr,
217 						   "qsgmii_s2_p1");
218 				break;
219 			case FM1_DTSEC2:
220 				fdt_set_phy_handle(fdt, compat, addr,
221 						   "qsgmii_s2_p2");
222 				break;
223 			case FM1_DTSEC5:
224 				fdt_set_phy_handle(fdt, compat, addr,
225 						   "qsgmii_s2_p3");
226 				break;
227 			case FM1_DTSEC6:
228 				fdt_set_phy_handle(fdt, compat, addr,
229 						   "qsgmii_s2_p4");
230 				break;
231 			default:
232 				break;
233 			}
234 			break;
235 		default:
236 			break;
237 		}
238 		fdt_delprop(fdt, offset, "phy-connection-type");
239 		fdt_setprop_string(fdt, offset, "phy-connection-type",
240 				   "qsgmii");
241 	} else if (fm_info_get_enet_if(port) == PHY_INTERFACE_MODE_XGMII &&
242 		   port == FM1_10GEC1) {
243 		/* XFI interface */
244 		f_link.phy_id = port;
245 		f_link.duplex = 1;
246 		f_link.link_speed = 10000;
247 		f_link.pause = 0;
248 		f_link.asym_pause = 0;
249 		/* no PHY for XFI */
250 		fdt_delprop(fdt, offset, "phy-handle");
251 		fdt_setprop(fdt, offset, "fixed-link", &f_link, sizeof(f_link));
252 		fdt_setprop_string(fdt, offset, "phy-connection-type", "xgmii");
253 	}
254 }
255 
256 void fdt_fixup_board_enet(void *fdt)
257 {
258 	int i;
259 	struct ccsr_gur *gur = (void *)(CONFIG_SYS_FSL_GUTS_ADDR);
260 	u32 srds_s1;
261 
262 	srds_s1 = in_be32(&gur->rcwsr[4]) &
263 			FSL_CHASSIS2_RCWSR4_SRDS1_PRTCL_MASK;
264 	srds_s1 >>= FSL_CHASSIS2_RCWSR4_SRDS1_PRTCL_SHIFT;
265 
266 	for (i = FM1_DTSEC1; i < NUM_FM_PORTS; i++) {
267 		switch (fm_info_get_enet_if(i)) {
268 		case PHY_INTERFACE_MODE_SGMII:
269 		case PHY_INTERFACE_MODE_QSGMII:
270 			switch (mdio_mux[i]) {
271 			case EMI1_SLOT1:
272 				fdt_status_okay_by_alias(fdt, "emi1_slot1");
273 				break;
274 			case EMI1_SLOT2:
275 				fdt_status_okay_by_alias(fdt, "emi1_slot2");
276 				break;
277 			case EMI1_SLOT3:
278 				fdt_status_okay_by_alias(fdt, "emi1_slot3");
279 				break;
280 			case EMI1_SLOT4:
281 				fdt_status_okay_by_alias(fdt, "emi1_slot4");
282 				break;
283 			default:
284 				break;
285 			}
286 			break;
287 		case PHY_INTERFACE_MODE_XGMII:
288 			break;
289 		default:
290 			break;
291 		}
292 	}
293 }
294 
295 int board_eth_init(bd_t *bis)
296 {
297 #ifdef CONFIG_FMAN_ENET
298 	int i, idx, lane, slot, interface;
299 	struct memac_mdio_info dtsec_mdio_info;
300 	struct memac_mdio_info tgec_mdio_info;
301 	struct ccsr_gur *gur = (void *)(CONFIG_SYS_FSL_GUTS_ADDR);
302 	u32 srds_s1;
303 
304 	srds_s1 = in_be32(&gur->rcwsr[4]) &
305 			FSL_CHASSIS2_RCWSR4_SRDS1_PRTCL_MASK;
306 	srds_s1 >>= FSL_CHASSIS2_RCWSR4_SRDS1_PRTCL_SHIFT;
307 
308 	/* Initialize the mdio_mux array so we can recognize empty elements */
309 	for (i = 0; i < NUM_FM_PORTS; i++)
310 		mdio_mux[i] = EMI_NONE;
311 
312 	dtsec_mdio_info.regs =
313 		(struct memac_mdio_controller *)CONFIG_SYS_FM1_DTSEC_MDIO_ADDR;
314 
315 	dtsec_mdio_info.name = DEFAULT_FM_MDIO_NAME;
316 
317 	/* Register the 1G MDIO bus */
318 	fm_memac_mdio_init(bis, &dtsec_mdio_info);
319 
320 	tgec_mdio_info.regs =
321 		(struct memac_mdio_controller *)CONFIG_SYS_FM1_TGEC_MDIO_ADDR;
322 	tgec_mdio_info.name = DEFAULT_FM_TGEC_MDIO_NAME;
323 
324 	/* Register the 10G MDIO bus */
325 	fm_memac_mdio_init(bis, &tgec_mdio_info);
326 
327 	/* Register the muxing front-ends to the MDIO buses */
328 	ls1043aqds_mdio_init(DEFAULT_FM_MDIO_NAME, EMI1_RGMII1);
329 	ls1043aqds_mdio_init(DEFAULT_FM_MDIO_NAME, EMI1_RGMII2);
330 	ls1043aqds_mdio_init(DEFAULT_FM_MDIO_NAME, EMI1_SLOT1);
331 	ls1043aqds_mdio_init(DEFAULT_FM_MDIO_NAME, EMI1_SLOT2);
332 	ls1043aqds_mdio_init(DEFAULT_FM_MDIO_NAME, EMI1_SLOT3);
333 	ls1043aqds_mdio_init(DEFAULT_FM_MDIO_NAME, EMI1_SLOT4);
334 	ls1043aqds_mdio_init(DEFAULT_FM_TGEC_MDIO_NAME, EMI2);
335 
336 	/* Set the two on-board RGMII PHY address */
337 	fm_info_set_phy_address(FM1_DTSEC3, RGMII_PHY1_ADDR);
338 	fm_info_set_phy_address(FM1_DTSEC4, RGMII_PHY2_ADDR);
339 
340 	switch (srds_s1) {
341 	case 0x2555:
342 		/* 2.5G SGMII on lane A, MAC 9 */
343 		fm_info_set_phy_address(FM1_DTSEC9, 9);
344 		break;
345 	case 0x4555:
346 	case 0x4558:
347 		/* QSGMII on lane A, MAC 1/2/5/6 */
348 		fm_info_set_phy_address(FM1_DTSEC1,
349 					QSGMII_CARD_PORT1_PHY_ADDR_S1);
350 		fm_info_set_phy_address(FM1_DTSEC2,
351 					QSGMII_CARD_PORT2_PHY_ADDR_S1);
352 		fm_info_set_phy_address(FM1_DTSEC5,
353 					QSGMII_CARD_PORT3_PHY_ADDR_S1);
354 		fm_info_set_phy_address(FM1_DTSEC6,
355 					QSGMII_CARD_PORT4_PHY_ADDR_S1);
356 		break;
357 	case 0x1355:
358 		/* SGMII on lane B, MAC 2*/
359 		fm_info_set_phy_address(FM1_DTSEC2, SGMII_CARD_PORT1_PHY_ADDR);
360 		break;
361 	case 0x2355:
362 		/* 2.5G SGMII on lane A, MAC 9 */
363 		fm_info_set_phy_address(FM1_DTSEC9, 9);
364 		/* SGMII on lane B, MAC 2*/
365 		fm_info_set_phy_address(FM1_DTSEC2, SGMII_CARD_PORT1_PHY_ADDR);
366 		break;
367 	case 0x3335:
368 		/* SGMII on lane C, MAC 5 */
369 		fm_info_set_phy_address(FM1_DTSEC5, SGMII_CARD_PORT1_PHY_ADDR);
370 	case 0x3355:
371 	case 0x3358:
372 		/* SGMII on lane B, MAC 2 */
373 		fm_info_set_phy_address(FM1_DTSEC2, SGMII_CARD_PORT1_PHY_ADDR);
374 	case 0x3555:
375 	case 0x3558:
376 		/* SGMII on lane A, MAC 9 */
377 		fm_info_set_phy_address(FM1_DTSEC9, SGMII_CARD_PORT1_PHY_ADDR);
378 		break;
379 	case 0x1455:
380 		/* QSGMII on lane B, MAC 1/2/5/6 */
381 		fm_info_set_phy_address(FM1_DTSEC1,
382 					QSGMII_CARD_PORT1_PHY_ADDR_S2);
383 		fm_info_set_phy_address(FM1_DTSEC2,
384 					QSGMII_CARD_PORT2_PHY_ADDR_S2);
385 		fm_info_set_phy_address(FM1_DTSEC5,
386 					QSGMII_CARD_PORT3_PHY_ADDR_S2);
387 		fm_info_set_phy_address(FM1_DTSEC6,
388 					QSGMII_CARD_PORT4_PHY_ADDR_S2);
389 		break;
390 	case 0x2455:
391 		/* 2.5G SGMII on lane A, MAC 9 */
392 		fm_info_set_phy_address(FM1_DTSEC9, 9);
393 		/* QSGMII on lane B, MAC 1/2/5/6 */
394 		fm_info_set_phy_address(FM1_DTSEC1,
395 					QSGMII_CARD_PORT1_PHY_ADDR_S2);
396 		fm_info_set_phy_address(FM1_DTSEC2,
397 					QSGMII_CARD_PORT2_PHY_ADDR_S2);
398 		fm_info_set_phy_address(FM1_DTSEC5,
399 					QSGMII_CARD_PORT3_PHY_ADDR_S2);
400 		fm_info_set_phy_address(FM1_DTSEC6,
401 					QSGMII_CARD_PORT4_PHY_ADDR_S2);
402 		break;
403 	case 0x2255:
404 		/* 2.5G SGMII on lane A, MAC 9 */
405 		fm_info_set_phy_address(FM1_DTSEC9, 9);
406 		/* 2.5G SGMII on lane B, MAC 2 */
407 		fm_info_set_phy_address(FM1_DTSEC2, 2);
408 		break;
409 	case 0x3333:
410 		/* SGMII on lane A/B/C/D, MAC 9/2/5/6 */
411 		fm_info_set_phy_address(FM1_DTSEC9,
412 					SGMII_CARD_PORT1_PHY_ADDR);
413 		fm_info_set_phy_address(FM1_DTSEC2,
414 					SGMII_CARD_PORT1_PHY_ADDR);
415 		fm_info_set_phy_address(FM1_DTSEC5,
416 					SGMII_CARD_PORT1_PHY_ADDR);
417 		fm_info_set_phy_address(FM1_DTSEC6,
418 					SGMII_CARD_PORT1_PHY_ADDR);
419 		break;
420 	default:
421 		printf("Invalid SerDes protocol 0x%x for LS1043AQDS\n",
422 		       srds_s1);
423 		break;
424 	}
425 
426 	for (i = FM1_DTSEC1; i < FM1_DTSEC1 + CONFIG_SYS_NUM_FM1_DTSEC; i++) {
427 		idx = i - FM1_DTSEC1;
428 		interface = fm_info_get_enet_if(i);
429 		switch (interface) {
430 		case PHY_INTERFACE_MODE_SGMII:
431 		case PHY_INTERFACE_MODE_SGMII_2500:
432 		case PHY_INTERFACE_MODE_QSGMII:
433 			if (interface == PHY_INTERFACE_MODE_SGMII) {
434 				lane = serdes_get_first_lane(FSL_SRDS_1,
435 						SGMII_FM1_DTSEC1 + idx);
436 			} else if (interface == PHY_INTERFACE_MODE_SGMII_2500) {
437 				lane = serdes_get_first_lane(FSL_SRDS_1,
438 						SGMII_2500_FM1_DTSEC1 + idx);
439 			} else {
440 				lane = serdes_get_first_lane(FSL_SRDS_1,
441 						QSGMII_FM1_A);
442 			}
443 
444 			if (lane < 0)
445 				break;
446 
447 			slot = lane_to_slot[lane];
448 			debug("FM1@DTSEC%u expects SGMII in slot %u\n",
449 			      idx + 1, slot);
450 			if (QIXIS_READ(present2) & (1 << (slot - 1)))
451 				fm_disable_port(i);
452 
453 			switch (slot) {
454 			case 1:
455 				mdio_mux[i] = EMI1_SLOT1;
456 				fm_info_set_mdio(i, mii_dev_for_muxval(
457 						 mdio_mux[i]));
458 				break;
459 			case 2:
460 				mdio_mux[i] = EMI1_SLOT2;
461 				fm_info_set_mdio(i, mii_dev_for_muxval(
462 						 mdio_mux[i]));
463 				break;
464 			case 3:
465 				mdio_mux[i] = EMI1_SLOT3;
466 				fm_info_set_mdio(i, mii_dev_for_muxval(
467 						 mdio_mux[i]));
468 				break;
469 			case 4:
470 				mdio_mux[i] = EMI1_SLOT4;
471 				fm_info_set_mdio(i, mii_dev_for_muxval(
472 						 mdio_mux[i]));
473 				break;
474 			default:
475 				break;
476 			}
477 			break;
478 		case PHY_INTERFACE_MODE_RGMII:
479 			if (i == FM1_DTSEC3)
480 				mdio_mux[i] = EMI1_RGMII1;
481 			else if (i == FM1_DTSEC4)
482 				mdio_mux[i] = EMI1_RGMII2;
483 			fm_info_set_mdio(i, mii_dev_for_muxval(mdio_mux[i]));
484 			break;
485 		default:
486 			break;
487 		}
488 	}
489 
490 	cpu_eth_init(bis);
491 #endif /* CONFIG_FMAN_ENET */
492 
493 	return pci_eth_init(bis);
494 }
495