314 lines
6.5 KiB
C
314 lines
6.5 KiB
C
/*
|
|
* (C) Copyright 2011 Freescale Semiconductor, Inc
|
|
* Andy Fleming
|
|
*
|
|
* SPDX-License-Identifier: GPL-2.0+
|
|
*/
|
|
|
|
/*
|
|
* MDIO Commands
|
|
*/
|
|
|
|
#include <common.h>
|
|
#include <command.h>
|
|
#include <miiphy.h>
|
|
#include <phy.h>
|
|
|
|
|
|
static char last_op[2];
|
|
static uint last_data;
|
|
static uint last_addr_lo;
|
|
static uint last_addr_hi;
|
|
static uint last_devad_lo;
|
|
static uint last_devad_hi;
|
|
static uint last_reg_lo;
|
|
static uint last_reg_hi;
|
|
|
|
static int extract_range(char *input, int *plo, int *phi)
|
|
{
|
|
char *end;
|
|
*plo = simple_strtol(input, &end, 0);
|
|
if (end == input)
|
|
return -1;
|
|
|
|
if ((*end == '-') && *(++end))
|
|
*phi = simple_strtol(end, NULL, 0);
|
|
else if (*end == '\0')
|
|
*phi = *plo;
|
|
else
|
|
return -1;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int mdio_write_ranges(struct phy_device *phydev, struct mii_dev *bus,
|
|
int addrlo,
|
|
int addrhi, int devadlo, int devadhi,
|
|
int reglo, int reghi, unsigned short data,
|
|
int extended)
|
|
{
|
|
int addr, devad, reg;
|
|
int err = 0;
|
|
|
|
for (addr = addrlo; addr <= addrhi; addr++) {
|
|
for (devad = devadlo; devad <= devadhi; devad++) {
|
|
for (reg = reglo; reg <= reghi; reg++) {
|
|
if (!extended)
|
|
err = bus->write(bus, addr, devad,
|
|
reg, data);
|
|
else
|
|
err = phydev->drv->writeext(phydev,
|
|
addr, devad, reg, data);
|
|
|
|
if (err)
|
|
goto err_out;
|
|
}
|
|
}
|
|
}
|
|
|
|
err_out:
|
|
return err;
|
|
}
|
|
|
|
static int mdio_read_ranges(struct phy_device *phydev, struct mii_dev *bus,
|
|
int addrlo,
|
|
int addrhi, int devadlo, int devadhi,
|
|
int reglo, int reghi, int extended)
|
|
{
|
|
int addr, devad, reg;
|
|
|
|
printf("Reading from bus %s\n", bus->name);
|
|
for (addr = addrlo; addr <= addrhi; addr++) {
|
|
printf("PHY at address %d:\n", addr);
|
|
|
|
for (devad = devadlo; devad <= devadhi; devad++) {
|
|
for (reg = reglo; reg <= reghi; reg++) {
|
|
int val;
|
|
|
|
if (!extended)
|
|
val = bus->read(bus, addr, devad, reg);
|
|
else
|
|
val = phydev->drv->readext(phydev, addr,
|
|
devad, reg);
|
|
|
|
if (val < 0) {
|
|
printf("Error\n");
|
|
|
|
return val;
|
|
}
|
|
|
|
if (devad >= 0)
|
|
printf("%d.", devad);
|
|
|
|
printf("%d - 0x%x\n", reg, val & 0xffff);
|
|
}
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* The register will be in the form [a[-b].]x[-y] */
|
|
static int extract_reg_range(char *input, int *devadlo, int *devadhi,
|
|
int *reglo, int *reghi)
|
|
{
|
|
char *regstr;
|
|
|
|
/* use strrchr to find the last string after a '.' */
|
|
regstr = strrchr(input, '.');
|
|
|
|
/* If it exists, extract the devad(s) */
|
|
if (regstr) {
|
|
char devadstr[32];
|
|
|
|
strncpy(devadstr, input, regstr - input);
|
|
devadstr[regstr - input] = '\0';
|
|
|
|
if (extract_range(devadstr, devadlo, devadhi))
|
|
return -1;
|
|
|
|
regstr++;
|
|
} else {
|
|
/* Otherwise, we have no devad, and we just got regs */
|
|
*devadlo = *devadhi = MDIO_DEVAD_NONE;
|
|
|
|
regstr = input;
|
|
}
|
|
|
|
return extract_range(regstr, reglo, reghi);
|
|
}
|
|
|
|
static int extract_phy_range(char *const argv[], int argc, struct mii_dev **bus,
|
|
struct phy_device **phydev,
|
|
int *addrlo, int *addrhi)
|
|
{
|
|
struct phy_device *dev = *phydev;
|
|
|
|
if ((argc < 1) || (argc > 2))
|
|
return -1;
|
|
|
|
/* If there are two arguments, it's busname addr */
|
|
if (argc == 2) {
|
|
*bus = miiphy_get_dev_by_name(argv[0]);
|
|
|
|
if (!*bus)
|
|
return -1;
|
|
|
|
return extract_range(argv[1], addrlo, addrhi);
|
|
}
|
|
|
|
/* It must be one argument, here */
|
|
|
|
/*
|
|
* This argument can be one of two things:
|
|
* 1) Ethernet device name
|
|
* 2) Just an address (use the previously-used bus)
|
|
*
|
|
* We check all buses for a PHY which is connected to an ethernet
|
|
* device by the given name. If none are found, we call
|
|
* extract_range() on the string, and see if it's an address range.
|
|
*/
|
|
dev = mdio_phydev_for_ethname(argv[0]);
|
|
|
|
if (dev) {
|
|
*addrlo = *addrhi = dev->addr;
|
|
*bus = dev->bus;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* It's an address or nothing useful */
|
|
return extract_range(argv[0], addrlo, addrhi);
|
|
}
|
|
|
|
/* ---------------------------------------------------------------- */
|
|
static int do_mdio(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
|
|
{
|
|
char op[2];
|
|
int addrlo, addrhi, reglo, reghi, devadlo, devadhi;
|
|
unsigned short data;
|
|
int pos = argc - 1;
|
|
struct mii_dev *bus;
|
|
struct phy_device *phydev = NULL;
|
|
int extended = 0;
|
|
|
|
if (argc < 2)
|
|
return CMD_RET_USAGE;
|
|
|
|
/*
|
|
* We use the last specified parameters, unless new ones are
|
|
* entered.
|
|
*/
|
|
op[0] = argv[1][0];
|
|
addrlo = last_addr_lo;
|
|
addrhi = last_addr_hi;
|
|
devadlo = last_devad_lo;
|
|
devadhi = last_devad_hi;
|
|
reglo = last_reg_lo;
|
|
reghi = last_reg_hi;
|
|
data = last_data;
|
|
|
|
bus = mdio_get_current_dev();
|
|
|
|
if (flag & CMD_FLAG_REPEAT)
|
|
op[0] = last_op[0];
|
|
|
|
if (strlen(argv[1]) > 1) {
|
|
op[1] = argv[1][1];
|
|
if (op[1] == 'x') {
|
|
phydev = mdio_phydev_for_ethname(argv[2]);
|
|
|
|
if (phydev) {
|
|
addrlo = phydev->addr;
|
|
addrhi = addrlo;
|
|
bus = phydev->bus;
|
|
extended = 1;
|
|
} else {
|
|
return -1;
|
|
}
|
|
|
|
if (!phydev->drv ||
|
|
(!phydev->drv->writeext && (op[0] == 'w')) ||
|
|
(!phydev->drv->readext && (op[0] == 'r'))) {
|
|
puts("PHY does not have extended functions\n");
|
|
return -1;
|
|
}
|
|
}
|
|
}
|
|
|
|
switch (op[0]) {
|
|
case 'w':
|
|
if (pos > 1)
|
|
data = simple_strtoul(argv[pos--], NULL, 16);
|
|
case 'r':
|
|
if (pos > 1)
|
|
if (extract_reg_range(argv[pos--], &devadlo, &devadhi,
|
|
®lo, ®hi))
|
|
return -1;
|
|
|
|
default:
|
|
if (pos > 1)
|
|
if (extract_phy_range(&(argv[2]), pos - 1, &bus,
|
|
&phydev, &addrlo, &addrhi))
|
|
return -1;
|
|
|
|
break;
|
|
}
|
|
|
|
if (op[0] == 'l') {
|
|
mdio_list_devices();
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* Save the chosen bus */
|
|
miiphy_set_current_dev(bus->name);
|
|
|
|
switch (op[0]) {
|
|
case 'w':
|
|
mdio_write_ranges(phydev, bus, addrlo, addrhi, devadlo, devadhi,
|
|
reglo, reghi, data, extended);
|
|
break;
|
|
|
|
case 'r':
|
|
mdio_read_ranges(phydev, bus, addrlo, addrhi, devadlo, devadhi,
|
|
reglo, reghi, extended);
|
|
break;
|
|
}
|
|
|
|
/*
|
|
* Save the parameters for repeats.
|
|
*/
|
|
last_op[0] = op[0];
|
|
last_addr_lo = addrlo;
|
|
last_addr_hi = addrhi;
|
|
last_devad_lo = devadlo;
|
|
last_devad_hi = devadhi;
|
|
last_reg_lo = reglo;
|
|
last_reg_hi = reghi;
|
|
last_data = data;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/***************************************************/
|
|
|
|
U_BOOT_CMD(
|
|
mdio, 6, 1, do_mdio,
|
|
"MDIO utility commands",
|
|
"list - List MDIO buses\n"
|
|
"mdio read <phydev> [<devad>.]<reg> - "
|
|
"read PHY's register at <devad>.<reg>\n"
|
|
"mdio write <phydev> [<devad>.]<reg> <data> - "
|
|
"write PHY's register at <devad>.<reg>\n"
|
|
"mdio rx <phydev> [<devad>.]<reg> - "
|
|
"read PHY's extended register at <devad>.<reg>\n"
|
|
"mdio wx <phydev> [<devad>.]<reg> <data> - "
|
|
"write PHY's extended register at <devad>.<reg>\n"
|
|
"<phydev> may be:\n"
|
|
" <busname> <addr>\n"
|
|
" <addr>\n"
|
|
" <eth name>\n"
|
|
"<addr> <devad>, and <reg> may be ranges, e.g. 1-5.4-0x1f.\n"
|
|
);
|