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Merge branch 'sf' of git://git.denx.de/u-boot-blackfin
[u-boot] / common / cmd_mii.c
1 /*
2  * (C) Copyright 2001
3  * Gerald Van Baren, Custom IDEAS, vanbaren@cideas.com
4  *
5  * See file CREDITS for list of people who contributed to this
6  * project.
7  *
8  * This program is free software; you can redistribute it and/or
9  * modify it under the terms of the GNU General Public License as
10  * published by the Free Software Foundation; either version 2 of
11  * the License, or (at your option) any later version.
12  *
13  * This program is distributed in the hope that it will be useful,
14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
16  * GNU General Public License for more details.
17  *
18  * You should have received a copy of the GNU General Public License
19  * along with this program; if not, write to the Free Software
20  * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
21  * MA 02111-1307 USA
22  */
23
24 /*
25  * MII Utilities
26  */
27
28 #include <common.h>
29 #include <command.h>
30 #include <miiphy.h>
31
32 typedef struct _MII_reg_desc_t {
33         ushort regno;
34         char * name;
35 } MII_reg_desc_t;
36
37 static const MII_reg_desc_t reg_0_5_desc_tbl[] = {
38         { MII_BMCR,      "PHY control register" },
39         { MII_BMSR,      "PHY status register" },
40         { MII_PHYSID1,   "PHY ID 1 register" },
41         { MII_PHYSID2,   "PHY ID 2 register" },
42         { MII_ADVERTISE, "Autonegotiation advertisement register" },
43         { MII_LPA,       "Autonegotiation partner abilities register" },
44 };
45
46 typedef struct _MII_field_desc_t {
47         ushort hi;
48         ushort lo;
49         ushort mask;
50         char * name;
51 } MII_field_desc_t;
52
53 static const MII_field_desc_t reg_0_desc_tbl[] = {
54         { 15, 15, 0x01, "reset"                        },
55         { 14, 14, 0x01, "loopback"                     },
56         { 13,  6, 0x81, "speed selection"              }, /* special */
57         { 12, 12, 0x01, "A/N enable"                   },
58         { 11, 11, 0x01, "power-down"                   },
59         { 10, 10, 0x01, "isolate"                      },
60         {  9,  9, 0x01, "restart A/N"                  },
61         {  8,  8, 0x01, "duplex"                       }, /* special */
62         {  7,  7, 0x01, "collision test enable"        },
63         {  5,  0, 0x3f, "(reserved)"                   }
64 };
65
66 static const MII_field_desc_t reg_1_desc_tbl[] = {
67         { 15, 15, 0x01, "100BASE-T4 able"              },
68         { 14, 14, 0x01, "100BASE-X  full duplex able"  },
69         { 13, 13, 0x01, "100BASE-X  half duplex able"  },
70         { 12, 12, 0x01, "10 Mbps    full duplex able"  },
71         { 11, 11, 0x01, "10 Mbps    half duplex able"  },
72         { 10, 10, 0x01, "100BASE-T2 full duplex able"  },
73         {  9,  9, 0x01, "100BASE-T2 half duplex able"  },
74         {  8,  8, 0x01, "extended status"              },
75         {  7,  7, 0x01, "(reserved)"                   },
76         {  6,  6, 0x01, "MF preamble suppression"      },
77         {  5,  5, 0x01, "A/N complete"                 },
78         {  4,  4, 0x01, "remote fault"                 },
79         {  3,  3, 0x01, "A/N able"                     },
80         {  2,  2, 0x01, "link status"                  },
81         {  1,  1, 0x01, "jabber detect"                },
82         {  0,  0, 0x01, "extended capabilities"        },
83 };
84
85 static const MII_field_desc_t reg_2_desc_tbl[] = {
86         { 15,  0, 0xffff, "OUI portion"                },
87 };
88
89 static const MII_field_desc_t reg_3_desc_tbl[] = {
90         { 15, 10, 0x3f, "OUI portion"                },
91         {  9,  4, 0x3f, "manufacturer part number"   },
92         {  3,  0, 0x0f, "manufacturer rev. number"   },
93 };
94
95 static const MII_field_desc_t reg_4_desc_tbl[] = {
96         { 15, 15, 0x01, "next page able"               },
97         { 14, 14, 0x01, "reserved"                     },
98         { 13, 13, 0x01, "remote fault"                 },
99         { 12, 12, 0x01, "reserved"                     },
100         { 11, 11, 0x01, "asymmetric pause"             },
101         { 10, 10, 0x01, "pause enable"                 },
102         {  9,  9, 0x01, "100BASE-T4 able"              },
103         {  8,  8, 0x01, "100BASE-TX full duplex able"  },
104         {  7,  7, 0x01, "100BASE-TX able"              },
105         {  6,  6, 0x01, "10BASE-T   full duplex able"  },
106         {  5,  5, 0x01, "10BASE-T   able"              },
107         {  4,  0, 0x1f, "xxx to do"                    },
108 };
109
110 static const MII_field_desc_t reg_5_desc_tbl[] = {
111         { 15, 15, 0x01, "next page able"               },
112         { 14, 14, 0x01, "acknowledge"                  },
113         { 13, 13, 0x01, "remote fault"                 },
114         { 12, 12, 0x01, "(reserved)"                   },
115         { 11, 11, 0x01, "asymmetric pause able"        },
116         { 10, 10, 0x01, "pause able"                   },
117         {  9,  9, 0x01, "100BASE-T4 able"              },
118         {  8,  8, 0x01, "100BASE-X full duplex able"   },
119         {  7,  7, 0x01, "100BASE-TX able"              },
120         {  6,  6, 0x01, "10BASE-T full duplex able"    },
121         {  5,  5, 0x01, "10BASE-T able"                },
122         {  4,  0, 0x1f, "xxx to do"                    },
123 };
124 typedef struct _MII_field_desc_and_len_t {
125         const MII_field_desc_t *pdesc;
126         ushort len;
127 } MII_field_desc_and_len_t;
128
129 static const MII_field_desc_and_len_t desc_and_len_tbl[] = {
130         { reg_0_desc_tbl, ARRAY_SIZE(reg_0_desc_tbl)   },
131         { reg_1_desc_tbl, ARRAY_SIZE(reg_1_desc_tbl)   },
132         { reg_2_desc_tbl, ARRAY_SIZE(reg_2_desc_tbl)   },
133         { reg_3_desc_tbl, ARRAY_SIZE(reg_3_desc_tbl)   },
134         { reg_4_desc_tbl, ARRAY_SIZE(reg_4_desc_tbl)   },
135         { reg_5_desc_tbl, ARRAY_SIZE(reg_5_desc_tbl)   },
136 };
137
138 static void dump_reg(
139         ushort             regval,
140         const MII_reg_desc_t *prd,
141         const MII_field_desc_and_len_t *pdl);
142
143 static int special_field(
144         ushort regno,
145         const MII_field_desc_t *pdesc,
146         ushort regval);
147
148 static void MII_dump_0_to_5(
149         ushort regvals[6],
150         uchar reglo,
151         uchar reghi)
152 {
153         ulong i;
154
155         for (i = 0; i < 6; i++) {
156                 if ((reglo <= i) && (i <= reghi))
157                         dump_reg(regvals[i], &reg_0_5_desc_tbl[i],
158                                 &desc_and_len_tbl[i]);
159         }
160 }
161
162 static void dump_reg(
163         ushort             regval,
164         const MII_reg_desc_t *prd,
165         const MII_field_desc_and_len_t *pdl)
166 {
167         ulong i;
168         ushort mask_in_place;
169         const MII_field_desc_t *pdesc;
170
171         printf("%u.     (%04hx)                 -- %s --\n",
172                 prd->regno, regval, prd->name);
173
174         for (i = 0; i < pdl->len; i++) {
175                 pdesc = &pdl->pdesc[i];
176
177                 mask_in_place = pdesc->mask << pdesc->lo;
178
179                 printf("  (%04hx:%04hx) %u.",
180                         mask_in_place,
181                         regval & mask_in_place,
182                         prd->regno);
183
184                 if (special_field(prd->regno, pdesc, regval)) {
185                 }
186                 else {
187                         if (pdesc->hi == pdesc->lo)
188                                 printf("%2u   ", pdesc->lo);
189                         else
190                                 printf("%2u-%2u", pdesc->hi, pdesc->lo);
191                         printf(" = %5u    %s",
192                                 (regval & mask_in_place) >> pdesc->lo,
193                                 pdesc->name);
194                 }
195                 printf("\n");
196
197         }
198         printf("\n");
199 }
200
201 /* Special fields:
202 ** 0.6,13
203 ** 0.8
204 ** 2.15-0
205 ** 3.15-0
206 ** 4.4-0
207 ** 5.4-0
208 */
209
210 static int special_field(
211         ushort regno,
212         const MII_field_desc_t *pdesc,
213         ushort regval)
214 {
215         if ((regno == MII_BMCR) && (pdesc->lo == 6)) {
216                 ushort speed_bits = regval & (BMCR_SPEED1000 | BMCR_SPEED100);
217                 printf("%2u,%2u =   b%u%u    speed selection = %s Mbps",
218                         6, 13,
219                         (regval >>  6) & 1,
220                         (regval >> 13) & 1,
221                         speed_bits == BMCR_SPEED1000 ? "1000" :
222                         speed_bits == BMCR_SPEED100  ? "100" :
223                         "10");
224                 return 1;
225         }
226
227         else if ((regno == MII_BMCR) && (pdesc->lo == 8)) {
228                 printf("%2u    = %5u    duplex = %s",
229                         pdesc->lo,
230                         (regval >>  pdesc->lo) & 1,
231                         ((regval >> pdesc->lo) & 1) ? "full" : "half");
232                 return 1;
233         }
234
235         else if ((regno == MII_ADVERTISE) && (pdesc->lo == 0)) {
236                 ushort sel_bits = (regval >> pdesc->lo) & pdesc->mask;
237                 printf("%2u-%2u = %5u    selector = %s",
238                         pdesc->hi, pdesc->lo, sel_bits,
239                         sel_bits == PHY_ANLPAR_PSB_802_3 ?
240                                 "IEEE 802.3" :
241                         sel_bits == PHY_ANLPAR_PSB_802_9 ?
242                                 "IEEE 802.9 ISLAN-16T" :
243                         "???");
244                 return 1;
245         }
246
247         else if ((regno == MII_LPA) && (pdesc->lo == 0)) {
248                 ushort sel_bits = (regval >> pdesc->lo) & pdesc->mask;
249                 printf("%2u-%2u =     %u    selector = %s",
250                         pdesc->hi, pdesc->lo, sel_bits,
251                         sel_bits == PHY_ANLPAR_PSB_802_3 ?
252                                 "IEEE 802.3" :
253                         sel_bits == PHY_ANLPAR_PSB_802_9 ?
254                                 "IEEE 802.9 ISLAN-16T" :
255                         "???");
256                 return 1;
257         }
258
259         return 0;
260 }
261
262 static char last_op[2];
263 static uint last_data;
264 static uint last_addr_lo;
265 static uint last_addr_hi;
266 static uint last_reg_lo;
267 static uint last_reg_hi;
268
269 static void extract_range(
270         char * input,
271         unsigned char * plo,
272         unsigned char * phi)
273 {
274         char * end;
275         *plo = simple_strtoul(input, &end, 16);
276         if (*end == '-') {
277                 end++;
278                 *phi = simple_strtoul(end, NULL, 16);
279         }
280         else {
281                 *phi = *plo;
282         }
283 }
284
285 /* ---------------------------------------------------------------- */
286 static int do_mii(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
287 {
288         char            op[2];
289         unsigned char   addrlo, addrhi, reglo, reghi;
290         unsigned char   addr, reg;
291         unsigned short  data;
292         int             rcode = 0;
293         const char      *devname;
294
295         if (argc < 2)
296                 return cmd_usage(cmdtp);
297
298 #if defined(CONFIG_MII_INIT)
299         mii_init ();
300 #endif
301
302         /*
303          * We use the last specified parameters, unless new ones are
304          * entered.
305          */
306         op[0] = last_op[0];
307         op[1] = last_op[1];
308         addrlo = last_addr_lo;
309         addrhi = last_addr_hi;
310         reglo  = last_reg_lo;
311         reghi  = last_reg_hi;
312         data   = last_data;
313
314         if ((flag & CMD_FLAG_REPEAT) == 0) {
315                 op[0] = argv[1][0];
316                 if (strlen(argv[1]) > 1)
317                         op[1] = argv[1][1];
318                 else
319                         op[1] = '\0';
320
321                 if (argc >= 3)
322                         extract_range(argv[2], &addrlo, &addrhi);
323                 if (argc >= 4)
324                         extract_range(argv[3], &reglo, &reghi);
325                 if (argc >= 5)
326                         data = simple_strtoul (argv[4], NULL, 16);
327         }
328
329         /* use current device */
330         devname = miiphy_get_current_dev();
331
332         /*
333          * check info/read/write.
334          */
335         if (op[0] == 'i') {
336                 unsigned char j, start, end;
337                 unsigned int oui;
338                 unsigned char model;
339                 unsigned char rev;
340
341                 /*
342                  * Look for any and all PHYs.  Valid addresses are 0..31.
343                  */
344                 if (argc >= 3) {
345                         start = addrlo; end = addrhi;
346                 } else {
347                         start = 0; end = 31;
348                 }
349
350                 for (j = start; j <= end; j++) {
351                         if (miiphy_info (devname, j, &oui, &model, &rev) == 0) {
352                                 printf("PHY 0x%02X: "
353                                         "OUI = 0x%04X, "
354                                         "Model = 0x%02X, "
355                                         "Rev = 0x%02X, "
356                                         "%3dbase%s, %s\n",
357                                         j, oui, model, rev,
358                                         miiphy_speed (devname, j),
359                                         miiphy_is_1000base_x (devname, j)
360                                                 ? "X" : "T",
361                                         (miiphy_duplex (devname, j) == FULL)
362                                                 ? "FDX" : "HDX");
363                         }
364                 }
365         } else if (op[0] == 'r') {
366                 for (addr = addrlo; addr <= addrhi; addr++) {
367                         for (reg = reglo; reg <= reghi; reg++) {
368                                 data = 0xffff;
369                                 if (miiphy_read (devname, addr, reg, &data) != 0) {
370                                         printf(
371                                         "Error reading from the PHY addr=%02x reg=%02x\n",
372                                                 addr, reg);
373                                         rcode = 1;
374                                 } else {
375                                         if ((addrlo != addrhi) || (reglo != reghi))
376                                                 printf("addr=%02x reg=%02x data=",
377                                                         (uint)addr, (uint)reg);
378                                         printf("%04X\n", data & 0x0000FFFF);
379                                 }
380                         }
381                         if ((addrlo != addrhi) && (reglo != reghi))
382                                 printf("\n");
383                 }
384         } else if (op[0] == 'w') {
385                 for (addr = addrlo; addr <= addrhi; addr++) {
386                         for (reg = reglo; reg <= reghi; reg++) {
387                                 if (miiphy_write (devname, addr, reg, data) != 0) {
388                                         printf("Error writing to the PHY addr=%02x reg=%02x\n",
389                                                 addr, reg);
390                                         rcode = 1;
391                                 }
392                         }
393                 }
394         } else if (strncmp(op, "du", 2) == 0) {
395                 ushort regs[6];
396                 int ok = 1;
397                 if ((reglo > 5) || (reghi > 5)) {
398                         printf(
399                                 "The MII dump command only formats the "
400                                 "standard MII registers, 0-5.\n");
401                         return 1;
402                 }
403                 for (addr = addrlo; addr <= addrhi; addr++) {
404                         for (reg = reglo; reg < reghi + 1; reg++) {
405                                 if (miiphy_read(devname, addr, reg, &regs[reg]) != 0) {
406                                         ok = 0;
407                                         printf(
408                                         "Error reading from the PHY addr=%02x reg=%02x\n",
409                                                 addr, reg);
410                                         rcode = 1;
411                                 }
412                         }
413                         if (ok)
414                                 MII_dump_0_to_5(regs, reglo, reghi);
415                         printf("\n");
416                 }
417         } else if (strncmp(op, "de", 2) == 0) {
418                 if (argc == 2)
419                         miiphy_listdev ();
420                 else
421                         miiphy_set_current_dev (argv[2]);
422         } else {
423                 return cmd_usage(cmdtp);
424         }
425
426         /*
427          * Save the parameters for repeats.
428          */
429         last_op[0] = op[0];
430         last_op[1] = op[1];
431         last_addr_lo = addrlo;
432         last_addr_hi = addrhi;
433         last_reg_lo  = reglo;
434         last_reg_hi  = reghi;
435         last_data    = data;
436
437         return rcode;
438 }
439
440 /***************************************************/
441
442 U_BOOT_CMD(
443         mii,    5,      1,      do_mii,
444         "MII utility commands",
445         "device                     - list available devices\n"
446         "mii device <devname>           - set current device\n"
447         "mii info   <addr>              - display MII PHY info\n"
448         "mii read   <addr> <reg>        - read  MII PHY <addr> register <reg>\n"
449         "mii write  <addr> <reg> <data> - write MII PHY <addr> register <reg>\n"
450         "mii dump   <addr> <reg>        - pretty-print <addr> <reg> (0-5 only)\n"
451         "Addr and/or reg may be ranges, e.g. 2-7."
452 );