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git.ipfire.org Git - people/ms/u-boot.git/blob - common/cmd_mdio.c
2 * (C) Copyright 2011 Freescale Semiconductor, Inc
5 * See file CREDITS for list of people who contributed to this
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.
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.
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,
34 static char last_op
[2];
35 static uint last_data
;
36 static uint last_addr_lo
;
37 static uint last_addr_hi
;
38 static uint last_devad_lo
;
39 static uint last_devad_hi
;
40 static uint last_reg_lo
;
41 static uint last_reg_hi
;
43 static int extract_range(char *input
, int *plo
, int *phi
)
46 *plo
= simple_strtol(input
, &end
, 0);
50 if ((*end
== '-') && *(++end
))
51 *phi
= simple_strtol(end
, NULL
, 0);
52 else if (*end
== '\0')
60 int mdio_write_ranges(struct mii_dev
*bus
, int addrlo
,
61 int addrhi
, int devadlo
, int devadhi
,
62 int reglo
, int reghi
, unsigned short data
)
67 for (addr
= addrlo
; addr
<= addrhi
; addr
++) {
68 for (devad
= devadlo
; devad
<= devadhi
; devad
++) {
69 for (reg
= reglo
; reg
<= reghi
; reg
++) {
70 err
= bus
->write(bus
, addr
, devad
, reg
, data
);
82 int mdio_read_ranges(struct mii_dev
*bus
, int addrlo
,
83 int addrhi
, int devadlo
, int devadhi
,
88 printf("Reading from bus %s\n", bus
->name
);
89 for (addr
= addrlo
; addr
<= addrhi
; addr
++) {
90 printf("PHY at address %d:\n", addr
);
92 for (devad
= devadlo
; devad
<= devadhi
; devad
++) {
93 for (reg
= reglo
; reg
<= reghi
; reg
++) {
96 val
= bus
->read(bus
, addr
, devad
, reg
);
104 printf("%d.", devad
);
106 printf("%d - 0x%x\n", reg
, val
& 0xffff);
114 /* The register will be in the form [a[-b].]x[-y] */
115 int extract_reg_range(char *input
, int *devadlo
, int *devadhi
,
116 int *reglo
, int *reghi
)
120 /* use strrchr to find the last string after a '.' */
121 regstr
= strrchr(input
, '.');
123 /* If it exists, extract the devad(s) */
127 strncpy(devadstr
, input
, regstr
- input
);
128 devadstr
[regstr
- input
] = '\0';
130 if (extract_range(devadstr
, devadlo
, devadhi
))
135 /* Otherwise, we have no devad, and we just got regs */
136 *devadlo
= *devadhi
= MDIO_DEVAD_NONE
;
141 return extract_range(regstr
, reglo
, reghi
);
144 int extract_phy_range(char *const argv
[], int argc
, struct mii_dev
**bus
,
145 int *addrlo
, int *addrhi
)
147 struct phy_device
*phydev
;
149 if ((argc
< 1) || (argc
> 2))
152 /* If there are two arguments, it's busname addr */
154 *bus
= miiphy_get_dev_by_name(argv
[0]);
159 return extract_range(argv
[1], addrlo
, addrhi
);
162 /* It must be one argument, here */
165 * This argument can be one of two things:
166 * 1) Ethernet device name
167 * 2) Just an address (use the previously-used bus)
169 * We check all buses for a PHY which is connected to an ethernet
170 * device by the given name. If none are found, we call
171 * extract_range() on the string, and see if it's an address range.
173 phydev
= mdio_phydev_for_ethname(argv
[0]);
176 *addrlo
= *addrhi
= phydev
->addr
;
182 /* It's an address or nothing useful */
183 return extract_range(argv
[0], addrlo
, addrhi
);
186 /* ---------------------------------------------------------------- */
187 static int do_mdio(cmd_tbl_t
*cmdtp
, int flag
, int argc
, char * const argv
[])
190 int addrlo
, addrhi
, reglo
, reghi
, devadlo
, devadhi
;
196 return cmd_usage(cmdtp
);
199 * We use the last specified parameters, unless new ones are
203 addrlo
= last_addr_lo
;
204 addrhi
= last_addr_hi
;
205 devadlo
= last_devad_lo
;
206 devadhi
= last_devad_hi
;
211 bus
= mdio_get_current_dev();
213 if (flag
& CMD_FLAG_REPEAT
)
219 data
= simple_strtoul(argv
[pos
--], NULL
, 16);
222 if (extract_reg_range(argv
[pos
--], &devadlo
, &devadhi
,
228 if (extract_phy_range(&(argv
[2]), pos
- 1, &bus
,
241 /* Save the chosen bus */
242 miiphy_set_current_dev(bus
->name
);
246 mdio_write_ranges(bus
, addrlo
, addrhi
, devadlo
, devadhi
,
251 mdio_read_ranges(bus
, addrlo
, addrhi
, devadlo
, devadhi
,
257 * Save the parameters for repeats.
260 last_addr_lo
= addrlo
;
261 last_addr_hi
= addrhi
;
262 last_devad_lo
= devadlo
;
263 last_devad_hi
= devadhi
;
271 /***************************************************/
275 "MDIO utility commands",
276 "list - List MDIO buses\n"
277 "mdio read <phydev> [<devad>.]<reg> - "
278 "read PHY's register at <devad>.<reg>\n"
279 "mdio write <phydev> [<devad>.]<reg> <data> - "
280 "write PHY's register at <devad>.<reg>\n"
282 " <busname> <addr>\n"
285 "<addr> <devad>, and <reg> may be ranges, e.g. 1-5.4-0x1f.\n"