1 /*
2  * Copyright 2012 Freescale Semiconductor, Inc.
3  * Author: Sandeep Kumar Singh <sandeep@freescale.com>
4  *
5  * SPDX-License-Identifier:	GPL-2.0+
6  */
7 
8 /* This file is based on board/freescale/corenet_ds/eth_superhydra.c */
9 
10 /*
11  * This file handles the board muxing between the Fman Ethernet MACs and
12  * the RGMII/SGMII/XGMII PHYs on a Freescale B4860 "Centaur". The SGMII
13  * PHYs are the two on-board 1Gb ports. There are no RGMII PHY on board.
14  * The 10Gb XGMII PHY is provided via the XAUI riser card. There is only
15  * one Fman device on B4860. The SERDES configuration is used to determine
16  * where the SGMII and XAUI cards exist, and also which Fman MACs are routed
17  * to which PHYs. So for a given Fman MAC, there is one and only PHY it
18  * connects to. MACs cannot be routed to PHYs dynamically. This configuration
19  * is done at boot time by reading SERDES protocol from RCW.
20  */
21 
22 #include <common.h>
23 #include <netdev.h>
24 #include <asm/fsl_serdes.h>
25 #include <fm_eth.h>
26 #include <fsl_mdio.h>
27 #include <malloc.h>
28 #include <fdt_support.h>
29 #include <fsl_dtsec.h>
30 
31 #include "../common/ngpixis.h"
32 #include "../common/fman.h"
33 #include "../common/qixis.h"
34 #include "b4860qds_qixis.h"
35 
36 #define EMI_NONE       0xFFFFFFFF
37 
38 #ifdef CONFIG_FMAN_ENET
39 
40 /*
41  * Mapping of all 16 SERDES lanes to board slots. A value n(>0) will mean that
42  * lane at index is mapped to slot number n. A value of '0' will mean
43  * that the mapping must be determined dynamically, or that the lane maps to
44  * something other than a board slot
45  */
46 static u8 lane_to_slot[] = {
47 	0, 0, 0, 0,
48 	0, 0, 0, 0,
49 	1, 1, 1, 1,
50 	0, 0, 0, 0
51 };
52 
53 /*
54  * This function initializes the lane_to_slot[] array. It reads RCW to check
55  * if Serdes2{E,F,G,H} is configured as slot 2 or as SFP and initializes
56  * lane_to_slot[] accordingly
57  */
58 static void initialize_lane_to_slot(void)
59 {
60 	unsigned int  serdes2_prtcl;
61 	ccsr_gur_t *gur = (void *)(CONFIG_SYS_MPC85xx_GUTS_ADDR);
62 	serdes2_prtcl = in_be32(&gur->rcwsr[4]) &
63 		FSL_CORENET2_RCWSR4_SRDS2_PRTCL;
64 	serdes2_prtcl >>= FSL_CORENET2_RCWSR4_SRDS2_PRTCL_SHIFT;
65 	debug("Initializing lane to slot: Serdes2 protocol: %x\n",
66 			serdes2_prtcl);
67 
68 	switch (serdes2_prtcl) {
69 	case 0x17:
70 	case 0x18:
71 		/*
72 		 * Configuration:
73 		 * SERDES: 2
74 		 * Lanes: A,B,C,D: SGMII
75 		 * Lanes: E,F: Aur
76 		 * Lanes: G,H: SRIO
77 		 */
78 	case 0x91:
79 		/*
80 		 * Configuration:
81 		 * SERDES: 2
82 		 * Lanes: A,B: SGMII
83 		 * Lanes: C,D: SRIO2
84 		 * Lanes: E,F,G,H: XAUI2
85 		 */
86 	case 0x93:
87 		/*
88 		 * Configuration:
89 		 * SERDES: 2
90 		 * Lanes: A,B,C,D: SGMII
91 		 * Lanes: E,F,G,H: XAUI2
92 		 */
93 	case 0x98:
94 		/*
95 		 * Configuration:
96 		 * SERDES: 2
97 		 * Lanes: A,B,C,D: XAUI2
98 		 * Lanes: E,F,G,H: XAUI2
99 		 */
100 	case 0x9a:
101 		/*
102 		 * Configuration:
103 		 * SERDES: 2
104 		 * Lanes: A,B: PCI
105 		 * Lanes: C,D: SGMII
106 		 * Lanes: E,F,G,H: XAUI2
107 		 */
108 	case 0x9e:
109 		/*
110 		 * Configuration:
111 		 * SERDES: 2
112 		 * Lanes: A,B,C,D: PCI
113 		 * Lanes: E,F,G,H: XAUI2
114 		 */
115 	case 0xb1:
116 	case 0xb2:
117 	case 0x8c:
118 	case 0x8d:
119 		/*
120 		 * Configuration:
121 		 * SERDES: 2
122 		 * Lanes: A,B,C,D: PCI
123 		 * Lanes: E,F: SGMII 3&4
124 		 * Lanes: G,H: XFI
125 		 */
126 	case 0xc2:
127 		/*
128 		 * Configuration:
129 		 * SERDES: 2
130 		 * Lanes: A,B: SGMII
131 		 * Lanes: C,D: SRIO2
132 		 * Lanes: E,F,G,H: XAUI2
133 		 */
134 		lane_to_slot[12] = 2;
135 		lane_to_slot[13] = lane_to_slot[12];
136 		lane_to_slot[14] = lane_to_slot[12];
137 		lane_to_slot[15] = lane_to_slot[12];
138 		break;
139 
140 	default:
141 		printf("Fman: Unsupported SerDes2 Protocol 0x%02x\n",
142 				serdes2_prtcl);
143 			break;
144 	}
145 	return;
146 }
147 
148 #endif /* #ifdef CONFIG_FMAN_ENET */
149 
150 int board_eth_init(bd_t *bis)
151 {
152 #ifdef CONFIG_FMAN_ENET
153 	struct memac_mdio_info memac_mdio_info;
154 	struct memac_mdio_info tg_memac_mdio_info;
155 	unsigned int i;
156 	unsigned int  serdes1_prtcl, serdes2_prtcl;
157 	int qsgmii;
158 	struct mii_dev *bus;
159 	ccsr_gur_t *gur = (void *)(CONFIG_SYS_MPC85xx_GUTS_ADDR);
160 	serdes1_prtcl = in_be32(&gur->rcwsr[4]) &
161 		FSL_CORENET2_RCWSR4_SRDS1_PRTCL;
162 	if (!serdes1_prtcl) {
163 		printf("SERDES1 is not enabled\n");
164 		return 0;
165 	}
166 	serdes1_prtcl >>= FSL_CORENET2_RCWSR4_SRDS1_PRTCL_SHIFT;
167 	debug("Using SERDES1 Protocol: 0x%x:\n", serdes1_prtcl);
168 
169 	serdes2_prtcl = in_be32(&gur->rcwsr[4]) &
170 		FSL_CORENET2_RCWSR4_SRDS2_PRTCL;
171 	if (!serdes2_prtcl) {
172 		printf("SERDES2 is not enabled\n");
173 		return 0;
174 	}
175 	serdes2_prtcl >>= FSL_CORENET2_RCWSR4_SRDS2_PRTCL_SHIFT;
176 	debug("Using SERDES2 Protocol: 0x%x:\n", serdes2_prtcl);
177 
178 	printf("Initializing Fman\n");
179 
180 	initialize_lane_to_slot();
181 
182 	memac_mdio_info.regs =
183 		(struct memac_mdio_controller *)CONFIG_SYS_FM1_DTSEC_MDIO_ADDR;
184 	memac_mdio_info.name = DEFAULT_FM_MDIO_NAME;
185 
186 	/* Register the real 1G MDIO bus */
187 	fm_memac_mdio_init(bis, &memac_mdio_info);
188 
189 	tg_memac_mdio_info.regs =
190 		(struct memac_mdio_controller *)CONFIG_SYS_FM1_TGEC_MDIO_ADDR;
191 	tg_memac_mdio_info.name = DEFAULT_FM_TGEC_MDIO_NAME;
192 
193 	/* Register the real 10G MDIO bus */
194 	fm_memac_mdio_init(bis, &tg_memac_mdio_info);
195 
196 	/*
197 	 * Program the two on board DTSEC PHY addresses assuming that they are
198 	 * all SGMII. RGMII is not supported on this board. Setting SGMII 5 and
199 	 * 6 to on board SGMII phys
200 	 */
201 	fm_info_set_phy_address(FM1_DTSEC5, CONFIG_SYS_FM1_ONBOARD_PHY1_ADDR);
202 	fm_info_set_phy_address(FM1_DTSEC6, CONFIG_SYS_FM1_ONBOARD_PHY2_ADDR);
203 
204 	switch (serdes1_prtcl) {
205 	case 0x29:
206 	case 0x2a:
207 		/* Serdes 1: A-B SGMII, Configuring DTSEC 5 and 6 */
208 		debug("Set phy addresses for FM1_DTSEC5:%x, FM1_DTSEC6:%x\n",
209 		      CONFIG_SYS_FM1_ONBOARD_PHY1_ADDR,
210 		      CONFIG_SYS_FM1_ONBOARD_PHY2_ADDR);
211 		fm_info_set_phy_address(FM1_DTSEC5,
212 				CONFIG_SYS_FM1_ONBOARD_PHY1_ADDR);
213 		fm_info_set_phy_address(FM1_DTSEC6,
214 				CONFIG_SYS_FM1_ONBOARD_PHY2_ADDR);
215 		break;
216 #ifdef CONFIG_PPC_B4420
217 	case 0x17:
218 	case 0x18:
219 		/* Serdes 1: A-D SGMII, Configuring on board dual SGMII Phy */
220 		debug("Set phy addresses for FM1_DTSEC3:%x, FM1_DTSEC4:%x\n",
221 		      CONFIG_SYS_FM1_ONBOARD_PHY1_ADDR,
222 		      CONFIG_SYS_FM1_ONBOARD_PHY2_ADDR);
223 		/* Fixing Serdes clock by programming FPGA register */
224 		QIXIS_WRITE(brdcfg[4], QIXIS_SRDS1CLK_125);
225 		fm_info_set_phy_address(FM1_DTSEC3,
226 				CONFIG_SYS_FM1_ONBOARD_PHY1_ADDR);
227 		fm_info_set_phy_address(FM1_DTSEC4,
228 				CONFIG_SYS_FM1_ONBOARD_PHY2_ADDR);
229 		break;
230 #endif
231 	default:
232 		printf("Fman:  Unsupported SerDes1 Protocol 0x%02x\n",
233 				serdes1_prtcl);
234 		break;
235 	}
236 	switch (serdes2_prtcl) {
237 	case 0x17:
238 	case 0x18:
239 		debug("Set phy address on SGMII Riser for FM1_DTSEC1:%x\n",
240 		      CONFIG_SYS_FM1_DTSEC1_RISER_PHY_ADDR);
241 		fm_info_set_phy_address(FM1_DTSEC1,
242 				CONFIG_SYS_FM1_DTSEC1_RISER_PHY_ADDR);
243 		fm_info_set_phy_address(FM1_DTSEC2,
244 				CONFIG_SYS_FM1_DTSEC2_RISER_PHY_ADDR);
245 		fm_info_set_phy_address(FM1_DTSEC3,
246 				CONFIG_SYS_FM1_DTSEC3_RISER_PHY_ADDR);
247 		fm_info_set_phy_address(FM1_DTSEC4,
248 				CONFIG_SYS_FM1_DTSEC4_RISER_PHY_ADDR);
249 		break;
250 	case 0x48:
251 	case 0x49:
252 		debug("Set phy address on SGMII Riser for FM1_DTSEC1:%x\n",
253 		      CONFIG_SYS_FM1_DTSEC1_RISER_PHY_ADDR);
254 		fm_info_set_phy_address(FM1_DTSEC1,
255 				CONFIG_SYS_FM1_DTSEC1_RISER_PHY_ADDR);
256 		fm_info_set_phy_address(FM1_DTSEC2,
257 				CONFIG_SYS_FM1_DTSEC2_RISER_PHY_ADDR);
258 		fm_info_set_phy_address(FM1_DTSEC3,
259 				CONFIG_SYS_FM1_DTSEC3_RISER_PHY_ADDR);
260 		break;
261 	case 0xb1:
262 	case 0xb2:
263 	case 0x8c:
264 	case 0x8d:
265 		debug("Set phy addresses on SGMII Riser for FM1_DTSEC1:%x\n",
266 		      CONFIG_SYS_FM1_DTSEC1_RISER_PHY_ADDR);
267 		fm_info_set_phy_address(FM1_DTSEC3,
268 				CONFIG_SYS_FM1_DTSEC1_RISER_PHY_ADDR);
269 		fm_info_set_phy_address(FM1_DTSEC4,
270 				CONFIG_SYS_FM1_DTSEC2_RISER_PHY_ADDR);
271 		/*
272 		 * XFI does not need a PHY to work, but to make U-boot
273 		 * happy, assign a fake PHY address for a XFI port.
274 		 */
275 		fm_info_set_phy_address(FM1_10GEC1, 0);
276 		fm_info_set_phy_address(FM1_10GEC2, 1);
277 		break;
278 	case 0x98:
279 		/* XAUI in Slot1 and Slot2 */
280 		debug("Set phy address of AMC2PEX-2S for FM1_10GEC1:%x\n",
281 		      CONFIG_SYS_FM1_10GEC1_PHY_ADDR);
282 		fm_info_set_phy_address(FM1_10GEC1,
283 					CONFIG_SYS_FM1_10GEC1_PHY_ADDR);
284 		debug("Set phy address of AMC2PEX-2S for FM1_10GEC2:%x\n",
285 		      CONFIG_SYS_FM1_10GEC2_PHY_ADDR);
286 		fm_info_set_phy_address(FM1_10GEC2,
287 					CONFIG_SYS_FM1_10GEC2_PHY_ADDR);
288 		break;
289 	case 0x9E:
290 		/* XAUI in Slot2 */
291 		debug("Sett phy address of AMC2PEX-2S for FM1_10GEC2:%x\n",
292 		      CONFIG_SYS_FM1_10GEC2_PHY_ADDR);
293 		fm_info_set_phy_address(FM1_10GEC2,
294 					CONFIG_SYS_FM1_10GEC2_PHY_ADDR);
295 		break;
296 	default:
297 		printf("Fman:  Unsupported SerDes2 Protocol 0x%02x\n",
298 				serdes2_prtcl);
299 		break;
300 	}
301 
302 	/*set PHY address for QSGMII Riser Card on slot2*/
303 	bus = miiphy_get_dev_by_name(DEFAULT_FM_MDIO_NAME);
304 	qsgmii = is_qsgmii_riser_card(bus, PHY_BASE_ADDR, PORT_NUM, REGNUM);
305 
306 	if (qsgmii) {
307 		switch (serdes2_prtcl) {
308 		case 0xb2:
309 		case 0x8d:
310 			fm_info_set_phy_address(FM1_DTSEC3, PHY_BASE_ADDR);
311 			fm_info_set_phy_address(FM1_DTSEC4, PHY_BASE_ADDR + 1);
312 			break;
313 		default:
314 			break;
315 		}
316 	}
317 
318 	for (i = FM1_DTSEC1; i < FM1_DTSEC1 + CONFIG_SYS_NUM_FM1_DTSEC; i++) {
319 		int idx = i - FM1_DTSEC1;
320 
321 		switch (fm_info_get_enet_if(i)) {
322 		case PHY_INTERFACE_MODE_SGMII:
323 			fm_info_set_mdio(i,
324 				miiphy_get_dev_by_name(DEFAULT_FM_MDIO_NAME));
325 			break;
326 		case PHY_INTERFACE_MODE_NONE:
327 			fm_info_set_phy_address(i, 0);
328 			break;
329 		default:
330 			printf("Fman1: DTSEC%u set to unknown interface %i\n",
331 					idx + 1, fm_info_get_enet_if(i));
332 			fm_info_set_phy_address(i, 0);
333 			break;
334 		}
335 	}
336 
337 	for (i = FM1_10GEC1; i < FM1_10GEC1 + CONFIG_SYS_NUM_FM1_10GEC; i++) {
338 		int idx = i - FM1_10GEC1;
339 
340 		switch (fm_info_get_enet_if(i)) {
341 		case PHY_INTERFACE_MODE_XGMII:
342 			fm_info_set_mdio(i,
343 					 miiphy_get_dev_by_name
344 					 (DEFAULT_FM_TGEC_MDIO_NAME));
345 			break;
346 		case PHY_INTERFACE_MODE_NONE:
347 			fm_info_set_phy_address(i, 0);
348 			break;
349 		default:
350 			printf("Fman1: TGEC%u set to unknown interface %i\n",
351 			       idx + 1, fm_info_get_enet_if(i));
352 			fm_info_set_phy_address(i, 0);
353 			break;
354 		}
355 	}
356 
357 	cpu_eth_init(bis);
358 #endif
359 
360 	return pci_eth_init(bis);
361 }
362 
363 void board_ft_fman_fixup_port(void *fdt, char *compat, phys_addr_t addr,
364 			      enum fm_port port, int offset)
365 {
366 	int phy;
367 	char alias[32];
368 	struct fixed_link f_link;
369 	ccsr_gur_t *gur = (void *)(CONFIG_SYS_MPC85xx_GUTS_ADDR);
370 	u32 prtcl2 = in_be32(&gur->rcwsr[4]) & FSL_CORENET2_RCWSR4_SRDS2_PRTCL;
371 
372 	prtcl2 >>= FSL_CORENET2_RCWSR4_SRDS2_PRTCL_SHIFT;
373 
374 	if (fm_info_get_enet_if(port) == PHY_INTERFACE_MODE_SGMII) {
375 		phy = fm_info_get_phy_address(port);
376 
377 		sprintf(alias, "phy_sgmii_%x", phy);
378 		fdt_set_phy_handle(fdt, compat, addr, alias);
379 		fdt_status_okay_by_alias(fdt, alias);
380 	} else if (fm_info_get_enet_if(port) == PHY_INTERFACE_MODE_XGMII) {
381 		/* check if it's XFI interface for 10g */
382 		switch (prtcl2) {
383 		case 0x80:
384 		case 0x81:
385 		case 0x82:
386 		case 0x83:
387 		case 0x84:
388 		case 0x85:
389 		case 0x86:
390 		case 0x87:
391 		case 0x88:
392 		case 0x89:
393 		case 0x8a:
394 		case 0x8b:
395 		case 0x8c:
396 		case 0x8d:
397 		case 0x8e:
398 		case 0xb1:
399 		case 0xb2:
400 			f_link.phy_id = port;
401 			f_link.duplex = 1;
402 			f_link.link_speed = 10000;
403 			f_link.pause = 0;
404 			f_link.asym_pause = 0;
405 
406 			fdt_delprop(fdt, offset, "phy-handle");
407 			fdt_setprop(fdt, offset, "fixed-link", &f_link,
408 				    sizeof(f_link));
409 			break;
410 		case 0x98: /* XAUI interface */
411 			strcpy(alias, "phy_xaui_slot1");
412 			fdt_status_okay_by_alias(fdt, alias);
413 
414 			strcpy(alias, "phy_xaui_slot2");
415 			fdt_status_okay_by_alias(fdt, alias);
416 			break;
417 		case 0x9e: /* XAUI interface */
418 		case 0x9a:
419 		case 0x93:
420 		case 0x91:
421 			strcpy(alias, "phy_xaui_slot1");
422 			fdt_status_okay_by_alias(fdt, alias);
423 			break;
424 		case 0x97: /* XAUI interface */
425 		case 0xc3:
426 			strcpy(alias, "phy_xaui_slot2");
427 			fdt_status_okay_by_alias(fdt, alias);
428 			break;
429 		default:
430 			break;
431 		}
432 	}
433 }
434 
435 /*
436  * Set status to disabled for unused ethernet node
437  */
438 void fdt_fixup_board_enet(void *fdt)
439 {
440 	int i;
441 	char alias[32];
442 
443 	for (i = FM1_DTSEC1; i <= FM1_10GEC2; i++) {
444 		switch (fm_info_get_enet_if(i)) {
445 		case PHY_INTERFACE_MODE_NONE:
446 			sprintf(alias, "ethernet%u", i);
447 			fdt_status_disabled_by_alias(fdt, alias);
448 			break;
449 		default:
450 			break;
451 		}
452 	}
453 }
454