3 * Gerald Van Baren, Custom IDEAS, vanbaren@cideas.com
5 * SPDX-License-Identifier: GPL-2.0+
16 typedef struct _MII_reg_desc_t
{
21 static const MII_reg_desc_t reg_0_5_desc_tbl
[] = {
22 { MII_BMCR
, "PHY control register" },
23 { MII_BMSR
, "PHY status register" },
24 { MII_PHYSID1
, "PHY ID 1 register" },
25 { MII_PHYSID2
, "PHY ID 2 register" },
26 { MII_ADVERTISE
, "Autonegotiation advertisement register" },
27 { MII_LPA
, "Autonegotiation partner abilities register" },
30 typedef struct _MII_field_desc_t
{
37 static const MII_field_desc_t reg_0_desc_tbl
[] = {
38 { 15, 15, 0x01, "reset" },
39 { 14, 14, 0x01, "loopback" },
40 { 13, 6, 0x81, "speed selection" }, /* special */
41 { 12, 12, 0x01, "A/N enable" },
42 { 11, 11, 0x01, "power-down" },
43 { 10, 10, 0x01, "isolate" },
44 { 9, 9, 0x01, "restart A/N" },
45 { 8, 8, 0x01, "duplex" }, /* special */
46 { 7, 7, 0x01, "collision test enable" },
47 { 5, 0, 0x3f, "(reserved)" }
50 static const MII_field_desc_t reg_1_desc_tbl
[] = {
51 { 15, 15, 0x01, "100BASE-T4 able" },
52 { 14, 14, 0x01, "100BASE-X full duplex able" },
53 { 13, 13, 0x01, "100BASE-X half duplex able" },
54 { 12, 12, 0x01, "10 Mbps full duplex able" },
55 { 11, 11, 0x01, "10 Mbps half duplex able" },
56 { 10, 10, 0x01, "100BASE-T2 full duplex able" },
57 { 9, 9, 0x01, "100BASE-T2 half duplex able" },
58 { 8, 8, 0x01, "extended status" },
59 { 7, 7, 0x01, "(reserved)" },
60 { 6, 6, 0x01, "MF preamble suppression" },
61 { 5, 5, 0x01, "A/N complete" },
62 { 4, 4, 0x01, "remote fault" },
63 { 3, 3, 0x01, "A/N able" },
64 { 2, 2, 0x01, "link status" },
65 { 1, 1, 0x01, "jabber detect" },
66 { 0, 0, 0x01, "extended capabilities" },
69 static const MII_field_desc_t reg_2_desc_tbl
[] = {
70 { 15, 0, 0xffff, "OUI portion" },
73 static const MII_field_desc_t reg_3_desc_tbl
[] = {
74 { 15, 10, 0x3f, "OUI portion" },
75 { 9, 4, 0x3f, "manufacturer part number" },
76 { 3, 0, 0x0f, "manufacturer rev. number" },
79 static const MII_field_desc_t reg_4_desc_tbl
[] = {
80 { 15, 15, 0x01, "next page able" },
81 { 14, 14, 0x01, "(reserved)" },
82 { 13, 13, 0x01, "remote fault" },
83 { 12, 12, 0x01, "(reserved)" },
84 { 11, 11, 0x01, "asymmetric pause" },
85 { 10, 10, 0x01, "pause enable" },
86 { 9, 9, 0x01, "100BASE-T4 able" },
87 { 8, 8, 0x01, "100BASE-TX full duplex able" },
88 { 7, 7, 0x01, "100BASE-TX able" },
89 { 6, 6, 0x01, "10BASE-T full duplex able" },
90 { 5, 5, 0x01, "10BASE-T able" },
91 { 4, 0, 0x1f, "xxx to do" },
94 static const MII_field_desc_t reg_5_desc_tbl
[] = {
95 { 15, 15, 0x01, "next page able" },
96 { 14, 14, 0x01, "acknowledge" },
97 { 13, 13, 0x01, "remote fault" },
98 { 12, 12, 0x01, "(reserved)" },
99 { 11, 11, 0x01, "asymmetric pause able" },
100 { 10, 10, 0x01, "pause able" },
101 { 9, 9, 0x01, "100BASE-T4 able" },
102 { 8, 8, 0x01, "100BASE-X full duplex able" },
103 { 7, 7, 0x01, "100BASE-TX able" },
104 { 6, 6, 0x01, "10BASE-T full duplex able" },
105 { 5, 5, 0x01, "10BASE-T able" },
106 { 4, 0, 0x1f, "xxx to do" },
108 typedef struct _MII_field_desc_and_len_t
{
109 const MII_field_desc_t
*pdesc
;
111 } MII_field_desc_and_len_t
;
113 static const MII_field_desc_and_len_t desc_and_len_tbl
[] = {
114 { reg_0_desc_tbl
, ARRAY_SIZE(reg_0_desc_tbl
) },
115 { reg_1_desc_tbl
, ARRAY_SIZE(reg_1_desc_tbl
) },
116 { reg_2_desc_tbl
, ARRAY_SIZE(reg_2_desc_tbl
) },
117 { reg_3_desc_tbl
, ARRAY_SIZE(reg_3_desc_tbl
) },
118 { reg_4_desc_tbl
, ARRAY_SIZE(reg_4_desc_tbl
) },
119 { reg_5_desc_tbl
, ARRAY_SIZE(reg_5_desc_tbl
) },
122 static void dump_reg(
124 const MII_reg_desc_t
*prd
,
125 const MII_field_desc_and_len_t
*pdl
);
127 static int special_field(
129 const MII_field_desc_t
*pdesc
,
132 static void MII_dump_0_to_5(
139 for (i
= 0; i
< 6; i
++) {
140 if ((reglo
<= i
) && (i
<= reghi
))
141 dump_reg(regvals
[i
], ®_0_5_desc_tbl
[i
],
142 &desc_and_len_tbl
[i
]);
146 static void dump_reg(
148 const MII_reg_desc_t
*prd
,
149 const MII_field_desc_and_len_t
*pdl
)
152 ushort mask_in_place
;
153 const MII_field_desc_t
*pdesc
;
155 printf("%u. (%04hx) -- %s --\n",
156 prd
->regno
, regval
, prd
->name
);
158 for (i
= 0; i
< pdl
->len
; i
++) {
159 pdesc
= &pdl
->pdesc
[i
];
161 mask_in_place
= pdesc
->mask
<< pdesc
->lo
;
163 printf(" (%04hx:%04x) %u.",
165 regval
& mask_in_place
,
168 if (special_field(prd
->regno
, pdesc
, regval
)) {
171 if (pdesc
->hi
== pdesc
->lo
)
172 printf("%2u ", pdesc
->lo
);
174 printf("%2u-%2u", pdesc
->hi
, pdesc
->lo
);
176 (regval
& mask_in_place
) >> pdesc
->lo
,
194 static int special_field(
196 const MII_field_desc_t
*pdesc
,
199 if ((regno
== MII_BMCR
) && (pdesc
->lo
== 6)) {
200 ushort speed_bits
= regval
& (BMCR_SPEED1000
| BMCR_SPEED100
);
201 printf("%2u,%2u = b%u%u speed selection = %s Mbps",
205 speed_bits
== BMCR_SPEED1000
? "1000" :
206 speed_bits
== BMCR_SPEED100
? "100" :
211 else if ((regno
== MII_BMCR
) && (pdesc
->lo
== 8)) {
212 printf("%2u = %5u duplex = %s",
214 (regval
>> pdesc
->lo
) & 1,
215 ((regval
>> pdesc
->lo
) & 1) ? "full" : "half");
219 else if ((regno
== MII_ADVERTISE
) && (pdesc
->lo
== 0)) {
220 ushort sel_bits
= (regval
>> pdesc
->lo
) & pdesc
->mask
;
221 printf("%2u-%2u = %5u selector = %s",
222 pdesc
->hi
, pdesc
->lo
, sel_bits
,
223 sel_bits
== PHY_ANLPAR_PSB_802_3
?
225 sel_bits
== PHY_ANLPAR_PSB_802_9
?
226 "IEEE 802.9 ISLAN-16T" :
231 else if ((regno
== MII_LPA
) && (pdesc
->lo
== 0)) {
232 ushort sel_bits
= (regval
>> pdesc
->lo
) & pdesc
->mask
;
233 printf("%2u-%2u = %u selector = %s",
234 pdesc
->hi
, pdesc
->lo
, sel_bits
,
235 sel_bits
== PHY_ANLPAR_PSB_802_3
?
237 sel_bits
== PHY_ANLPAR_PSB_802_9
?
238 "IEEE 802.9 ISLAN-16T" :
246 static char last_op
[2];
247 static uint last_data
;
248 static uint last_addr_lo
;
249 static uint last_addr_hi
;
250 static uint last_reg_lo
;
251 static uint last_reg_hi
;
253 static void extract_range(
259 *plo
= simple_strtoul(input
, &end
, 16);
262 *phi
= simple_strtoul(end
, NULL
, 16);
269 /* ---------------------------------------------------------------- */
270 static int do_mii(cmd_tbl_t
*cmdtp
, int flag
, int argc
, char * const argv
[])
273 unsigned char addrlo
, addrhi
, reglo
, reghi
;
274 unsigned char addr
, reg
;
280 return CMD_RET_USAGE
;
282 #if defined(CONFIG_MII_INIT)
287 * We use the last specified parameters, unless new ones are
292 addrlo
= last_addr_lo
;
293 addrhi
= last_addr_hi
;
298 if ((flag
& CMD_FLAG_REPEAT
) == 0) {
300 if (strlen(argv
[1]) > 1)
306 extract_range(argv
[2], &addrlo
, &addrhi
);
308 extract_range(argv
[3], ®lo
, ®hi
);
310 data
= simple_strtoul (argv
[4], NULL
, 16);
313 /* use current device */
314 devname
= miiphy_get_current_dev();
317 * check info/read/write.
320 unsigned char j
, start
, end
;
326 * Look for any and all PHYs. Valid addresses are 0..31.
329 start
= addrlo
; end
= addrhi
;
334 for (j
= start
; j
<= end
; j
++) {
335 if (miiphy_info (devname
, j
, &oui
, &model
, &rev
) == 0) {
336 printf("PHY 0x%02X: "
342 miiphy_speed (devname
, j
),
343 miiphy_is_1000base_x (devname
, j
)
345 (miiphy_duplex (devname
, j
) == FULL
)
349 } else if (op
[0] == 'r') {
350 for (addr
= addrlo
; addr
<= addrhi
; addr
++) {
351 for (reg
= reglo
; reg
<= reghi
; reg
++) {
353 if (miiphy_read (devname
, addr
, reg
, &data
) != 0) {
355 "Error reading from the PHY addr=%02x reg=%02x\n",
359 if ((addrlo
!= addrhi
) || (reglo
!= reghi
))
360 printf("addr=%02x reg=%02x data=",
361 (uint
)addr
, (uint
)reg
);
362 printf("%04X\n", data
& 0x0000FFFF);
365 if ((addrlo
!= addrhi
) && (reglo
!= reghi
))
368 } else if (op
[0] == 'w') {
369 for (addr
= addrlo
; addr
<= addrhi
; addr
++) {
370 for (reg
= reglo
; reg
<= reghi
; reg
++) {
371 if (miiphy_write (devname
, addr
, reg
, data
) != 0) {
372 printf("Error writing to the PHY addr=%02x reg=%02x\n",
378 } else if (strncmp(op
, "du", 2) == 0) {
381 if ((reglo
> 5) || (reghi
> 5)) {
383 "The MII dump command only formats the "
384 "standard MII registers, 0-5.\n");
387 for (addr
= addrlo
; addr
<= addrhi
; addr
++) {
388 for (reg
= reglo
; reg
< reghi
+ 1; reg
++) {
389 if (miiphy_read(devname
, addr
, reg
, ®s
[reg
]) != 0) {
392 "Error reading from the PHY addr=%02x reg=%02x\n",
398 MII_dump_0_to_5(regs
, reglo
, reghi
);
401 } else if (strncmp(op
, "de", 2) == 0) {
405 miiphy_set_current_dev (argv
[2]);
407 return CMD_RET_USAGE
;
411 * Save the parameters for repeats.
415 last_addr_lo
= addrlo
;
416 last_addr_hi
= addrhi
;
424 /***************************************************/
428 "MII utility commands",
429 "device - list available devices\n"
430 "mii device <devname> - set current device\n"
431 "mii info <addr> - display MII PHY info\n"
432 "mii read <addr> <reg> - read MII PHY <addr> register <reg>\n"
433 "mii write <addr> <reg> <data> - write MII PHY <addr> register <reg>\n"
434 "mii dump <addr> <reg> - pretty-print <addr> <reg> (0-5 only)\n"
435 "Addr and/or reg may be ranges, e.g. 2-7."