1 // SPDX-License-Identifier: GPL-2.0
2 /*
3  * Copyright (C) Marvell International Ltd. and its affiliates
4  */
5 
6 #include <common.h>
7 #include <spl.h>
8 #include <asm/io.h>
9 #include <asm/arch/cpu.h>
10 #include <asm/arch/soc.h>
11 
12 #include "high_speed_env_spec.h"
13 #include "sys_env_lib.h"
14 
15 u8 selectors_serdes_rev1_map[LAST_SERDES_TYPE][MAX_SERDES_LANES] = {
16 	/* 0  1    2    3    4    5 */
17 	{0x1, 0x1, NA,  NA,  NA,  NA},		/* PEX0 */
18 	{NA,  0x2, 0x1, NA,  0x1, NA},		/* PEX1 */
19 	{NA,  NA,  0x2, NA,  NA,  0x1},		/* PEX2 */
20 	{NA,  NA,  NA,  0x1, NA,  NA},		/* PEX3 */
21 	{0x2, 0x3, NA,  NA,  NA,  NA},		/* SATA0 */
22 	{NA,  NA,  0x3, NA,  0x2, NA},		/* SATA1 */
23 	{NA,  NA,  NA,  NA,  0x6, 0x2},		/* SATA2 */
24 	{NA,  NA,  NA,  0x3, NA,  NA},		/* SATA3 */
25 	{0x3, 0x4, NA,  NA,  NA,  NA},		/* SGMII0 */
26 	{NA,  0x5, 0x4, NA,  0x3, NA},		/* SGMII1 */
27 	{NA,  NA,  NA,  0x4, NA,  0x3},		/* SGMII2 */
28 	{NA,  0x7, NA,  NA,  NA,  NA},		/* QSGMII */
29 	{NA,  0x6, NA,  NA,  0x4, NA},		/* USB3_HOST0 */
30 	{NA,  NA,  NA,  0x5, NA,  0x4},		/* USB3_HOST1 */
31 	{NA,  NA,  NA,  0x6, 0x5, 0x5},		/* USB3_DEVICE */
32 	{0x0, 0x0, 0x0, 0x0, 0x0, 0x0}		/* DEFAULT_SERDES */
33 };
34 
35 int hws_serdes_seq_init(void)
36 {
37 	DEBUG_INIT_FULL_S("\n### serdes_seq_init ###\n");
38 
39 	if (hws_serdes_seq_db_init() != MV_OK) {
40 		printf("hws_serdes_seq_init: Error: Serdes initialization fail\n");
41 		return MV_FAIL;
42 	}
43 
44 	return MV_OK;
45 }
46 
47 int serdes_power_up_ctrl_ext(u32 serdes_num, int serdes_power_up,
48 			     enum serdes_type serdes_type,
49 			     enum serdes_speed baud_rate,
50 			     enum serdes_mode serdes_mode,
51 			     enum ref_clock ref_clock)
52 {
53 	return MV_NOT_SUPPORTED;
54 }
55 
56 u32 hws_serdes_silicon_ref_clock_get(void)
57 {
58 	DEBUG_INIT_FULL_S("\n### hws_serdes_silicon_ref_clock_get ###\n");
59 
60 	return REF_CLOCK_25MHZ;
61 }
62 
63 u32 hws_serdes_get_max_lane(void)
64 {
65 	switch (sys_env_device_id_get()) {
66 	case MV_6811:		/* A381/A3282: 6811/6821: single/dual cpu */
67 		return 4;
68 	case MV_6810:
69 		return 5;
70 	case MV_6820:
71 	case MV_6828:
72 		return 6;
73 	default:		/* not the right module */
74 		printf("%s: Device ID Error, using 4 SerDes lanes\n",
75 		       __func__);
76 		return 4;
77 	}
78 	return 6;
79 }
80 
81 int hws_is_serdes_active(u8 lane_num)
82 {
83 	int ret = 1;
84 
85 	/* Maximum lane count for A388 (6828) is 6 */
86 	if (lane_num > 6)
87 		ret = 0;
88 
89 	/* 4th Lane (#4 on Device 6810 is not Active */
90 	if (sys_env_device_id_get() == MV_6810 && lane_num == 4) {
91 		printf("%s: Error: Lane#4 on Device 6810 is not Active.\n",
92 		       __func__);
93 		return 0;
94 	}
95 
96 	/*
97 	 * 6th Lane (#5) on Device 6810 is Active, even though 6810
98 	 * has only 5 lanes
99 	 */
100 	if (sys_env_device_id_get() == MV_6810 && lane_num == 5)
101 		return 1;
102 
103 	if (lane_num >= hws_serdes_get_max_lane())
104 		ret = 0;
105 
106 	return ret;
107 }
108 
109 int hws_get_ext_base_addr(u32 serdes_num, u32 base_addr, u32 unit_base_offset,
110 			  u32 *unit_base_reg, u32 *unit_offset)
111 {
112 	*unit_base_reg = base_addr;
113 	*unit_offset = unit_base_offset;
114 
115 	return MV_OK;
116 }
117 
118 /*
119  * hws_serdes_get_phy_selector_val
120  *
121  * DESCRIPTION: Get the mapping of Serdes Selector values according to the
122  *              Serdes revision number
123  * INPUT:    serdes_num - Serdes number
124  *           serdes_type - Serdes type
125  * OUTPUT: None
126  * RETURN:
127  *       Mapping of Serdes Selector values
128  */
129 u32 hws_serdes_get_phy_selector_val(int serdes_num,
130 				    enum serdes_type serdes_type)
131 {
132 	if (serdes_type >= LAST_SERDES_TYPE)
133 		return 0xff;
134 
135 	if (hws_ctrl_serdes_rev_get() == MV_SERDES_REV_1_2) {
136 		return selectors_serdes_rev1_map
137 			[serdes_type][serdes_num];
138 	} else
139 		return selectors_serdes_rev2_map
140 			[serdes_type][serdes_num];
141 }
142 
143 u32 hws_get_physical_serdes_num(u32 serdes_num)
144 {
145 	if ((serdes_num == 4) && (sys_env_device_id_get() == MV_6810)) {
146 		/*
147 		 * For 6810, there are 5 Serdes and Serdes Num 4 doesn't
148 		 * exist. Instead Serdes Num 5 is connected.
149 		 */
150 		return 5;
151 	} else {
152 		return serdes_num;
153 	}
154 }
155