1 /*
2 * Copyright (c) 2021-2023 HPMicro
3 *
4 * SPDX-License-Identifier: BSD-3-Clause
5 *
6 */
7
8 /*---------------------------------------------------------------------
9 * Includes
10 *---------------------------------------------------------------------
11 */
12 #include "hpm_enet_drv.h"
13 #include "hpm_dp83867_regs.h"
14 #include "hpm_dp83867.h"
15
16 /*---------------------------------------------------------------------
17 * Internal API
18 *---------------------------------------------------------------------
19 */
dp83867_check_id(ENET_Type * ptr)20 bool dp83867_check_id(ENET_Type *ptr)
21 {
22 uint16_t id1, id2;
23
24 id1 = enet_read_phy(ptr, DP83867_ADDR, DP83867_PHYIDR1);
25 id2 = enet_read_phy(ptr, DP83867_ADDR, DP83867_PHYIDR2);
26
27 if (DP83867_PHYIDR1_OUI_MSB_GET(id1) == DP83867_ID1 && DP83867_PHYIDR2_OUI_LSB_GET(id2) == DP83867_ID2) {
28 return true;
29 } else {
30 return false;
31 }
32 }
33
dp83867_write_phy_ext(ENET_Type * ptr,uint32_t phy_addr,uint32_t addr,uint32_t data)34 static void dp83867_write_phy_ext(ENET_Type *ptr, uint32_t phy_addr, uint32_t addr, uint32_t data)
35 {
36 /* set the control register for register address */
37 enet_write_phy(ptr, phy_addr, DP83867_REGCR, DP83867_REGCR_FUNCTION_SET(0) | DP83867_REGCR_DEVAD_SET(0x1f));
38
39 /* write the specified register address */
40 enet_write_phy(ptr, phy_addr, DP83867_ADDAR, addr);
41
42 /* set the control register for register data */
43 enet_write_phy(ptr, phy_addr, DP83867_REGCR, DP83867_REGCR_FUNCTION_SET(1) | DP83867_REGCR_DEVAD_SET(0x1f));
44
45 /* write the specified register data */
46 enet_write_phy(ptr, phy_addr, DP83867_ADDAR, data);
47 }
48
dp83867_read_phy_ext(ENET_Type * ptr,uint32_t phy_addr,uint32_t addr)49 static uint16_t dp83867_read_phy_ext(ENET_Type *ptr, uint32_t phy_addr, uint32_t addr)
50 {
51 /* set the control register for register address */
52 enet_write_phy(ptr, phy_addr, DP83867_REGCR, DP83867_REGCR_FUNCTION_SET(0) | DP83867_REGCR_DEVAD_SET(0x1f));
53
54 /* write the specified register address */
55 enet_write_phy(ptr, phy_addr, DP83867_ADDAR, addr);
56
57 /* set the control register for register data */
58 enet_write_phy(ptr, phy_addr, DP83867_REGCR, DP83867_REGCR_FUNCTION_SET(1) | DP83867_REGCR_DEVAD_SET(0x1f));
59
60 /* read the specified register data */
61 return enet_read_phy(ptr, phy_addr, DP83867_ADDAR);
62 }
63 /*---------------------------------------------------------------------
64 * API
65 *---------------------------------------------------------------------
66 */
dp83867_reset(ENET_Type * ptr)67 void dp83867_reset(ENET_Type *ptr)
68 {
69 uint16_t data;
70
71 /* PHY reset */
72 enet_write_phy(ptr, DP83867_ADDR, DP83867_BMCR, DP83867_BMCR_RESET_SET(1));
73
74 /* wait until the reset is completed */
75 do {
76 data = enet_read_phy(ptr, DP83867_ADDR, DP83867_BMCR);
77 } while (DP83867_BMCR_RESET_GET(data));
78 }
79
dp83867_basic_mode_default_config(ENET_Type * ptr,dp83867_config_t * config)80 void dp83867_basic_mode_default_config(ENET_Type *ptr, dp83867_config_t *config)
81 {
82 (void)ptr;
83
84 config->loopback = false; /* Disable PCS loopback mode */
85 #if defined(__DISABLE_AUTO_NEGO) && (__DISABLE_AUTO_NEGO)
86 config->auto_negotiation = false; /* Disable Auto-Negotiation */
87 config->speed = enet_phy_port_speed_100mbps;
88 config->duplex = enet_phy_duplex_full;
89 #else
90 config->auto_negotiation = true; /* Enable Auto-Negotiation */
91 #endif
92 }
93
dp83867_basic_mode_init(ENET_Type * ptr,dp83867_config_t * config)94 bool dp83867_basic_mode_init(ENET_Type *ptr, dp83867_config_t *config)
95 {
96 uint16_t data = 0;
97
98 data |= DP83867_BMCR_RESET_SET(0) /* Normal operation */
99 | DP83867_BMCR_LOOPBACK_SET(config->loopback) /* Configure PCS loopback mode */
100 | DP83867_BMCR_ANE_SET(config->auto_negotiation) /* Configure Auto-Negotiation */
101 | DP83867_BMCR_PWD_SET(0) /* Normal operation */
102 | DP83867_BMCR_ISOLATE_SET(0) /* Normal operation */
103 | DP83867_BMCR_RESTART_AN_SET(0) /* Normal operation (ignored when Auto-Negotiation is disabled) */
104 | DP83867_BMCR_COLLISION_TEST_SET(0); /* Normal operation */
105
106 if (config->auto_negotiation == false) {
107 data |= DP83867_BMCR_SPEED0_SET(config->speed) | DP83867_BMCR_SPEED1_SET(config->speed >> 1); /* Set port speed */
108 data |= DP83867_BMCR_DUPLEX_SET(config->duplex); /* Set duplex mode */
109 }
110
111 /* check the id of dp83867 */
112 if (dp83867_check_id(ptr) == false) {
113 return false;
114 }
115
116 enet_write_phy(ptr, DP83867_ADDR, DP83867_BMCR, data);
117 data = enet_read_phy(ptr, DP83867_ADDR, DP83867_BMCR);
118
119 return true;
120 }
121
dp83867_get_phy_status(ENET_Type * ptr,enet_phy_status_t * status)122 void dp83867_get_phy_status(ENET_Type *ptr, enet_phy_status_t *status)
123 {
124 uint16_t data;
125
126 data = enet_read_phy(ptr, DP83867_ADDR, DP83867_PHYSTS);
127 status->enet_phy_link = DP83867_PHYSTS_LINK_STATUS_GET(data);
128 status->enet_phy_speed = DP83867_PHYSTS_SPEED_SELECTION_GET(data) == 0 ? enet_phy_port_speed_10mbps : DP83867_PHYSTS_SPEED_SELECTION_GET(data) == 1 ? enet_phy_port_speed_100mbps : enet_phy_port_speed_1000mbps;
129 status->enet_phy_duplex = DP83867_PHYSTS_DUPLEX_MODE_GET(data);
130 }
131
dp83867_set_mdi_crossover_mode(ENET_Type * ptr,enet_phy_crossover_mode_t mode)132 void dp83867_set_mdi_crossover_mode(ENET_Type *ptr, enet_phy_crossover_mode_t mode)
133 {
134 uint16_t data;
135
136 data = dp83867_read_phy_ext(ptr, DP83867_ADDR, DP83867_PHYCR);
137 data &= ~DP83867_PHYCR_MDI_CROSSOVER_MASK;
138 data |= DP83867_PHYCR_MDI_CROSSOVER_SET(mode);
139 dp83867_write_phy_ext(ptr, DP83867_ADDR, DP83867_PHYCR, data);
140 }
141