]>
git.ipfire.org Git - thirdparty/u-boot.git/blob - cmd/mdio.c
1 // SPDX-License-Identifier: GPL-2.0+
3 * (C) Copyright 2011 Freescale Semiconductor, Inc
16 static char last_op
[2];
17 static uint last_data
;
18 static uint last_addr_lo
;
19 static uint last_addr_hi
;
20 static uint last_devad_lo
;
21 static uint last_devad_hi
;
22 static uint last_reg_lo
;
23 static uint last_reg_hi
;
25 static int extract_range(char *input
, int *plo
, int *phi
)
28 *plo
= simple_strtol(input
, &end
, 16);
32 if ((*end
== '-') && *(++end
))
33 *phi
= simple_strtol(end
, NULL
, 16);
34 else if (*end
== '\0')
42 static int mdio_write_ranges(struct phy_device
*phydev
, struct mii_dev
*bus
,
44 int addrhi
, int devadlo
, int devadhi
,
45 int reglo
, int reghi
, unsigned short data
,
51 for (addr
= addrlo
; addr
<= addrhi
; addr
++) {
52 for (devad
= devadlo
; devad
<= devadhi
; devad
++) {
53 for (reg
= reglo
; reg
<= reghi
; reg
++) {
55 err
= bus
->write(bus
, addr
, devad
,
58 err
= phydev
->drv
->writeext(phydev
,
59 addr
, devad
, reg
, data
);
71 static int mdio_read_ranges(struct phy_device
*phydev
, struct mii_dev
*bus
,
73 int addrhi
, int devadlo
, int devadhi
,
74 int reglo
, int reghi
, int extended
)
78 printf("Reading from bus %s\n", bus
->name
);
79 for (addr
= addrlo
; addr
<= addrhi
; addr
++) {
80 printf("PHY at address %x:\n", addr
);
82 for (devad
= devadlo
; devad
<= devadhi
; devad
++) {
83 for (reg
= reglo
; reg
<= reghi
; reg
++) {
87 val
= bus
->read(bus
, addr
, devad
, reg
);
89 val
= phydev
->drv
->readext(phydev
, addr
,
101 printf("%d - 0x%x\n", reg
, val
& 0xffff);
109 /* The register will be in the form [a[-b].]x[-y] */
110 static int extract_reg_range(char *input
, int *devadlo
, int *devadhi
,
111 int *reglo
, int *reghi
)
115 /* use strrchr to find the last string after a '.' */
116 regstr
= strrchr(input
, '.');
118 /* If it exists, extract the devad(s) */
122 strncpy(devadstr
, input
, regstr
- input
);
123 devadstr
[regstr
- input
] = '\0';
125 if (extract_range(devadstr
, devadlo
, devadhi
))
130 /* Otherwise, we have no devad, and we just got regs */
131 *devadlo
= *devadhi
= MDIO_DEVAD_NONE
;
136 return extract_range(regstr
, reglo
, reghi
);
139 static int extract_phy_range(char *const argv
[], int argc
, struct mii_dev
**bus
,
140 struct phy_device
**phydev
,
141 int *addrlo
, int *addrhi
)
143 struct phy_device
*dev
= *phydev
;
145 if ((argc
< 1) || (argc
> 2))
148 /* If there are two arguments, it's busname addr */
150 *bus
= miiphy_get_dev_by_name(argv
[0]);
155 return extract_range(argv
[1], addrlo
, addrhi
);
158 /* It must be one argument, here */
161 * This argument can be one of two things:
162 * 1) Ethernet device name
163 * 2) Just an address (use the previously-used bus)
165 * We check all buses for a PHY which is connected to an ethernet
166 * device by the given name. If none are found, we call
167 * extract_range() on the string, and see if it's an address range.
169 dev
= mdio_phydev_for_ethname(argv
[0]);
172 *addrlo
= *addrhi
= dev
->addr
;
178 /* It's an address or nothing useful */
179 return extract_range(argv
[0], addrlo
, addrhi
);
182 /* ---------------------------------------------------------------- */
183 static int do_mdio(cmd_tbl_t
*cmdtp
, int flag
, int argc
, char * const argv
[])
186 int addrlo
, addrhi
, reglo
, reghi
, devadlo
, devadhi
;
190 struct phy_device
*phydev
= NULL
;
194 return CMD_RET_USAGE
;
197 * We use the last specified parameters, unless new ones are
201 addrlo
= last_addr_lo
;
202 addrhi
= last_addr_hi
;
203 devadlo
= last_devad_lo
;
204 devadhi
= last_devad_hi
;
209 bus
= mdio_get_current_dev();
211 if (flag
& CMD_FLAG_REPEAT
)
214 if (strlen(argv
[1]) > 1) {
217 phydev
= mdio_phydev_for_ethname(argv
[2]);
220 addrlo
= phydev
->addr
;
229 (!phydev
->drv
->writeext
&& (op
[0] == 'w')) ||
230 (!phydev
->drv
->readext
&& (op
[0] == 'r'))) {
231 puts("PHY does not have extended functions\n");
240 data
= simple_strtoul(argv
[pos
--], NULL
, 16);
243 if (extract_reg_range(argv
[pos
--], &devadlo
, &devadhi
,
249 if (extract_phy_range(&argv
[2], pos
- 1, &bus
,
250 &phydev
, &addrlo
, &addrhi
))
262 /* Save the chosen bus */
263 miiphy_set_current_dev(bus
->name
);
267 mdio_write_ranges(phydev
, bus
, addrlo
, addrhi
, devadlo
, devadhi
,
268 reglo
, reghi
, data
, extended
);
272 mdio_read_ranges(phydev
, bus
, addrlo
, addrhi
, devadlo
, devadhi
,
273 reglo
, reghi
, extended
);
278 * Save the parameters for repeats.
281 last_addr_lo
= addrlo
;
282 last_addr_hi
= addrhi
;
283 last_devad_lo
= devadlo
;
284 last_devad_hi
= devadhi
;
292 /***************************************************/
296 "MDIO utility commands",
297 "list - List MDIO buses\n"
298 "mdio read <phydev> [<devad>.]<reg> - "
299 "read PHY's register at <devad>.<reg>\n"
300 "mdio write <phydev> [<devad>.]<reg> <data> - "
301 "write PHY's register at <devad>.<reg>\n"
302 "mdio rx <phydev> [<devad>.]<reg> - "
303 "read PHY's extended register at <devad>.<reg>\n"
304 "mdio wx <phydev> [<devad>.]<reg> <data> - "
305 "write PHY's extended register at <devad>.<reg>\n"
307 " <busname> <addr>\n"
310 "<addr> <devad>, and <reg> may be ranges, e.g. 1-5.4-0x1f.\n"