]>
git.ipfire.org Git - people/ms/u-boot.git/blob - common/cmd_mdio.c
2 * (C) Copyright 2011 Freescale Semiconductor, Inc
5 * SPDX-License-Identifier: GPL-2.0+
18 static char last_op
[2];
19 static uint last_data
;
20 static uint last_addr_lo
;
21 static uint last_addr_hi
;
22 static uint last_devad_lo
;
23 static uint last_devad_hi
;
24 static uint last_reg_lo
;
25 static uint last_reg_hi
;
27 static int extract_range(char *input
, int *plo
, int *phi
)
30 *plo
= simple_strtol(input
, &end
, 0);
34 if ((*end
== '-') && *(++end
))
35 *phi
= simple_strtol(end
, NULL
, 0);
36 else if (*end
== '\0')
44 static int mdio_write_ranges(struct mii_dev
*bus
, int addrlo
,
45 int addrhi
, int devadlo
, int devadhi
,
46 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
++) {
54 err
= bus
->write(bus
, addr
, devad
, reg
, data
);
66 static int mdio_read_ranges(struct mii_dev
*bus
, int addrlo
,
67 int addrhi
, int devadlo
, int devadhi
,
72 printf("Reading from bus %s\n", bus
->name
);
73 for (addr
= addrlo
; addr
<= addrhi
; addr
++) {
74 printf("PHY at address %d:\n", addr
);
76 for (devad
= devadlo
; devad
<= devadhi
; devad
++) {
77 for (reg
= reglo
; reg
<= reghi
; reg
++) {
80 val
= bus
->read(bus
, addr
, devad
, reg
);
90 printf("%d - 0x%x\n", reg
, val
& 0xffff);
98 /* The register will be in the form [a[-b].]x[-y] */
99 static int extract_reg_range(char *input
, int *devadlo
, int *devadhi
,
100 int *reglo
, int *reghi
)
104 /* use strrchr to find the last string after a '.' */
105 regstr
= strrchr(input
, '.');
107 /* If it exists, extract the devad(s) */
111 strncpy(devadstr
, input
, regstr
- input
);
112 devadstr
[regstr
- input
] = '\0';
114 if (extract_range(devadstr
, devadlo
, devadhi
))
119 /* Otherwise, we have no devad, and we just got regs */
120 *devadlo
= *devadhi
= MDIO_DEVAD_NONE
;
125 return extract_range(regstr
, reglo
, reghi
);
128 static int extract_phy_range(char *const argv
[], int argc
, struct mii_dev
**bus
,
129 int *addrlo
, int *addrhi
)
131 struct phy_device
*phydev
;
133 if ((argc
< 1) || (argc
> 2))
136 /* If there are two arguments, it's busname addr */
138 *bus
= miiphy_get_dev_by_name(argv
[0]);
143 return extract_range(argv
[1], addrlo
, addrhi
);
146 /* It must be one argument, here */
149 * This argument can be one of two things:
150 * 1) Ethernet device name
151 * 2) Just an address (use the previously-used bus)
153 * We check all buses for a PHY which is connected to an ethernet
154 * device by the given name. If none are found, we call
155 * extract_range() on the string, and see if it's an address range.
157 phydev
= mdio_phydev_for_ethname(argv
[0]);
160 *addrlo
= *addrhi
= phydev
->addr
;
166 /* It's an address or nothing useful */
167 return extract_range(argv
[0], addrlo
, addrhi
);
170 /* ---------------------------------------------------------------- */
171 static int do_mdio(cmd_tbl_t
*cmdtp
, int flag
, int argc
, char * const argv
[])
174 int addrlo
, addrhi
, reglo
, reghi
, devadlo
, devadhi
;
180 return CMD_RET_USAGE
;
183 * We use the last specified parameters, unless new ones are
187 addrlo
= last_addr_lo
;
188 addrhi
= last_addr_hi
;
189 devadlo
= last_devad_lo
;
190 devadhi
= last_devad_hi
;
195 bus
= mdio_get_current_dev();
197 if (flag
& CMD_FLAG_REPEAT
)
203 data
= simple_strtoul(argv
[pos
--], NULL
, 16);
206 if (extract_reg_range(argv
[pos
--], &devadlo
, &devadhi
,
212 if (extract_phy_range(&(argv
[2]), pos
- 1, &bus
,
225 /* Save the chosen bus */
226 miiphy_set_current_dev(bus
->name
);
230 mdio_write_ranges(bus
, addrlo
, addrhi
, devadlo
, devadhi
,
235 mdio_read_ranges(bus
, addrlo
, addrhi
, devadlo
, devadhi
,
241 * Save the parameters for repeats.
244 last_addr_lo
= addrlo
;
245 last_addr_hi
= addrhi
;
246 last_devad_lo
= devadlo
;
247 last_devad_hi
= devadhi
;
255 /***************************************************/
259 "MDIO utility commands",
260 "list - List MDIO buses\n"
261 "mdio read <phydev> [<devad>.]<reg> - "
262 "read PHY's register at <devad>.<reg>\n"
263 "mdio write <phydev> [<devad>.]<reg> <data> - "
264 "write PHY's register at <devad>.<reg>\n"
266 " <busname> <addr>\n"
269 "<addr> <devad>, and <reg> may be ranges, e.g. 1-5.4-0x1f.\n"