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u-boot/drivers/net/phy/cortina.c
Vicentiu Galanopulo 552e7c57d0 net/phy/cortina: Add support for CS4223 PHY 
Add support for Cortina CS4223 10G PHY
  - As per the CS4223 specs, an EEPROM module is
    connected to the PHY. At startup the PHY reads
    the firmware line and tries to load the firmware
    into the internal memory.
  - This driver reads the EEPROM status
    and checks if firmware has been loaded

Signed-off-by: Vicentiu Galanopulo <vicentiu.galanopulo@nxp.com>
Acked-by: Joe Hershberger <joe.hershberger@ni.com>
2018-06-13 13:54:15 -05:00

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// SPDX-License-Identifier: GPL-2.0+
/*
* Cortina CS4315/CS4340 10G PHY drivers
*
* Copyright 2014 Freescale Semiconductor, Inc.
* Copyright 2018 NXP
*
*/
#include <config.h>
#include <common.h>
#include <malloc.h>
#include <linux/ctype.h>
#include <linux/string.h>
#include <linux/err.h>
#include <phy.h>
#include <cortina.h>
#ifdef CONFIG_SYS_CORTINA_FW_IN_NAND
#include <nand.h>
#elif defined(CONFIG_SYS_CORTINA_FW_IN_SPIFLASH)
#include <spi_flash.h>
#elif defined(CONFIG_SYS_CORTINA_FW_IN_MMC)
#include <mmc.h>
#endif
#ifndef CONFIG_PHYLIB_10G
#error The Cortina PHY needs 10G support
#endif
#ifndef CORTINA_NO_FW_UPLOAD
struct cortina_reg_config cortina_reg_cfg[] = {
/* CS4315_enable_sr_mode */
{VILLA_GLOBAL_MSEQCLKCTRL, 0x8004},
{VILLA_MSEQ_OPTIONS, 0xf},
{VILLA_MSEQ_PC, 0x0},
{VILLA_MSEQ_BANKSELECT, 0x4},
{VILLA_LINE_SDS_COMMON_SRX0_RX_CPA, 0x55},
{VILLA_LINE_SDS_COMMON_SRX0_RX_LOOP_FILTER, 0x30},
{VILLA_DSP_SDS_SERDES_SRX_DFE0_SELECT, 0x1},
{VILLA_DSP_SDS_DSP_COEF_DFE0_SELECT, 0x2},
{VILLA_LINE_SDS_COMMON_SRX0_RX_CPB, 0x2003},
{VILLA_DSP_SDS_SERDES_SRX_FFE_DELAY_CTRL, 0xF047},
{VILLA_MSEQ_ENABLE_MSB, 0x0000},
{VILLA_MSEQ_SPARE21_LSB, 0x6},
{VILLA_MSEQ_RESET_COUNT_LSB, 0x0},
{VILLA_MSEQ_SPARE12_MSB, 0x0000},
/*
* to invert the receiver path, uncomment the next line
* write (VILLA_MSEQ_SPARE12_MSB, 0x4000)
*
* SPARE2_LSB is used to configure the device while in sr mode to
* enable power savings and to use the optical module LOS signal.
* in power savings mode, the internal prbs checker can not be used.
* if the optical module LOS signal is used as an input to the micro
* code, then the micro code will wait until the optical module
* LOS = 0 before turning on the adaptive equalizer.
* Setting SPARE2_LSB bit 0 to 1 places the devie in power savings mode
* while setting bit 0 to 0 disables power savings mode.
* Setting SPARE2_LSB bit 2 to 0 configures the device to use the
* optical module LOS signal while setting bit 2 to 1 configures the
* device so that it will ignore the optical module LOS SPARE2_LSB = 0
*/
/* enable power savings, ignore optical module LOS */
{VILLA_MSEQ_SPARE2_LSB, 0x5},
{VILLA_MSEQ_SPARE7_LSB, 0x1e},
{VILLA_MSEQ_BANKSELECT, 0x4},
{VILLA_MSEQ_SPARE9_LSB, 0x2},
{VILLA_MSEQ_SPARE3_LSB, 0x0F53},
{VILLA_MSEQ_SPARE3_MSB, 0x2006},
{VILLA_MSEQ_SPARE8_LSB, 0x3FF7},
{VILLA_MSEQ_SPARE8_MSB, 0x0A46},
{VILLA_MSEQ_COEF8_FFE0_LSB, 0xD500},
{VILLA_MSEQ_COEF8_FFE1_LSB, 0x0200},
{VILLA_MSEQ_COEF8_FFE2_LSB, 0xBA00},
{VILLA_MSEQ_COEF8_FFE3_LSB, 0x0100},
{VILLA_MSEQ_COEF8_FFE4_LSB, 0x0300},
{VILLA_MSEQ_COEF8_FFE5_LSB, 0x0300},
{VILLA_MSEQ_COEF8_DFE0_LSB, 0x0700},
{VILLA_MSEQ_COEF8_DFE0N_LSB, 0x0E00},
{VILLA_MSEQ_COEF8_DFE1_LSB, 0x0B00},
{VILLA_DSP_SDS_DSP_COEF_LARGE_LEAK, 0x2},
{VILLA_DSP_SDS_SERDES_SRX_DAC_ENABLEB_LSB, 0xD000},
{VILLA_MSEQ_POWER_DOWN_LSB, 0xFFFF},
{VILLA_MSEQ_POWER_DOWN_MSB, 0x0},
{VILLA_MSEQ_CAL_RX_SLICER, 0x80},
{VILLA_DSP_SDS_SERDES_SRX_DAC_BIAS_SELECT1_MSB, 0x3f},
{VILLA_GLOBAL_MSEQCLKCTRL, 0x4},
{VILLA_MSEQ_OPTIONS, 0x7},
/* set up min value for ffe1 */
{VILLA_MSEQ_COEF_INIT_SEL, 0x2},
{VILLA_DSP_SDS_DSP_PRECODEDINITFFE21, 0x41},
/* CS4315_sr_rx_pre_eq_set_4in */
{VILLA_GLOBAL_MSEQCLKCTRL, 0x8004},
{VILLA_MSEQ_OPTIONS, 0xf},
{VILLA_MSEQ_BANKSELECT, 0x4},
{VILLA_MSEQ_PC, 0x0},
/* for lengths from 3.5 to 4.5inches */
{VILLA_MSEQ_SERDES_PARAM_LSB, 0x0306},
{VILLA_MSEQ_SPARE25_LSB, 0x0306},
{VILLA_MSEQ_SPARE21_LSB, 0x2},
{VILLA_MSEQ_SPARE23_LSB, 0x2},
{VILLA_MSEQ_CAL_RX_DFE_EQ, 0x0},
{VILLA_GLOBAL_MSEQCLKCTRL, 0x4},
{VILLA_MSEQ_OPTIONS, 0x7},
/* CS4315_rx_drive_4inch */
/* for length 4inches */
{VILLA_GLOBAL_VILLA2_COMPATIBLE, 0x0000},
{VILLA_HOST_SDS_COMMON_STX0_TX_OUTPUT_CTRLA, 0x3023},
{VILLA_LINE_SDS_COMMON_STX0_TX_OUTPUT_CTRLB, 0xc01E},
/* CS4315_tx_drive_4inch */
/* for length 4inches */
{VILLA_GLOBAL_VILLA2_COMPATIBLE, 0x0000},
{VILLA_LINE_SDS_COMMON_STX0_TX_OUTPUT_CTRLA, 0x3023},
{VILLA_LINE_SDS_COMMON_STX0_TX_OUTPUT_CTRLB, 0xc01E},
};
void cs4340_upload_firmware(struct phy_device *phydev)
{
char line_temp[0x50] = {0};
char reg_addr[0x50] = {0};
char reg_data[0x50] = {0};
int i, line_cnt = 0, column_cnt = 0;
struct cortina_reg_config fw_temp;
char *addr = NULL;
#if defined(CONFIG_SYS_CORTINA_FW_IN_NOR) || \
defined(CONFIG_SYS_CORTINA_FW_IN_REMOTE)
addr = (char *)CONFIG_CORTINA_FW_ADDR;
#elif defined(CONFIG_SYS_CORTINA_FW_IN_NAND)
int ret;
size_t fw_length = CONFIG_CORTINA_FW_LENGTH;
addr = malloc(CONFIG_CORTINA_FW_LENGTH);
ret = nand_read(get_nand_dev_by_index(0),
(loff_t)CONFIG_CORTINA_FW_ADDR,
&fw_length, (u_char *)addr);
if (ret == -EUCLEAN) {
printf("NAND read of Cortina firmware at 0x%x failed %d\n",
CONFIG_CORTINA_FW_ADDR, ret);
}
#elif defined(CONFIG_SYS_CORTINA_FW_IN_SPIFLASH)
int ret;
struct spi_flash *ucode_flash;
addr = malloc(CONFIG_CORTINA_FW_LENGTH);
ucode_flash = spi_flash_probe(CONFIG_ENV_SPI_BUS, CONFIG_ENV_SPI_CS,
CONFIG_ENV_SPI_MAX_HZ, CONFIG_ENV_SPI_MODE);
if (!ucode_flash) {
puts("SF: probe for Cortina ucode failed\n");
} else {
ret = spi_flash_read(ucode_flash, CONFIG_CORTINA_FW_ADDR,
CONFIG_CORTINA_FW_LENGTH, addr);
if (ret)
puts("SF: read for Cortina ucode failed\n");
spi_flash_free(ucode_flash);
}
#elif defined(CONFIG_SYS_CORTINA_FW_IN_MMC)
int dev = CONFIG_SYS_MMC_ENV_DEV;
u32 cnt = CONFIG_CORTINA_FW_LENGTH / 512;
u32 blk = CONFIG_CORTINA_FW_ADDR / 512;
struct mmc *mmc = find_mmc_device(CONFIG_SYS_MMC_ENV_DEV);
if (!mmc) {
puts("Failed to find MMC device for Cortina ucode\n");
} else {
addr = malloc(CONFIG_CORTINA_FW_LENGTH);
printf("MMC read: dev # %u, block # %u, count %u ...\n",
dev, blk, cnt);
mmc_init(mmc);
(void)mmc->block_dev.block_read(&mmc->block_dev, blk, cnt,
addr);
}
#endif
while (*addr != 'Q') {
i = 0;
while (*addr != 0x0a) {
line_temp[i++] = *addr++;
if (0x50 < i) {
printf("Not found Cortina PHY ucode at 0x%p\n",
(char *)CONFIG_CORTINA_FW_ADDR);
return;
}
}
addr++; /* skip '\n' */
line_cnt++;
column_cnt = i;
line_temp[column_cnt] = '\0';
if (CONFIG_CORTINA_FW_LENGTH < line_cnt)
return;
for (i = 0; i < column_cnt; i++) {
if (isspace(line_temp[i++]))
break;
}
memcpy(reg_addr, line_temp, i);
memcpy(reg_data, &line_temp[i], column_cnt - i);
strim(reg_addr);
strim(reg_data);
fw_temp.reg_addr = (simple_strtoul(reg_addr, NULL, 0)) & 0xffff;
fw_temp.reg_value = (simple_strtoul(reg_data, NULL, 0)) &
0xffff;
phy_write(phydev, 0x00, fw_temp.reg_addr, fw_temp.reg_value);
}
}
#endif
int cs4340_phy_init(struct phy_device *phydev)
{
#ifndef CORTINA_NO_FW_UPLOAD
int timeout = 100; /* 100ms */
#endif
int reg_value;
/*
* Cortina phy has provision to store
* phy firmware in attached dedicated EEPROM.
* Boards designed with EEPROM attached to Cortina
* does not require FW upload.
*/
#ifndef CORTINA_NO_FW_UPLOAD
/* step1: BIST test */
phy_write(phydev, 0x00, VILLA_GLOBAL_MSEQCLKCTRL, 0x0004);
phy_write(phydev, 0x00, VILLA_GLOBAL_LINE_SOFT_RESET, 0x0000);
phy_write(phydev, 0x00, VILLA_GLOBAL_BIST_CONTROL, 0x0001);
while (--timeout) {
reg_value = phy_read(phydev, 0x00, VILLA_GLOBAL_BIST_STATUS);
if (reg_value & mseq_edc_bist_done) {
if (0 == (reg_value & mseq_edc_bist_fail))
break;
}
udelay(1000);
}
if (!timeout) {
printf("%s BIST mseq_edc_bist_done timeout!\n", __func__);
return -1;
}
/* setp2: upload ucode */
cs4340_upload_firmware(phydev);
#endif
reg_value = phy_read(phydev, 0x00, VILLA_GLOBAL_DWNLD_CHECKSUM_STATUS);
if (reg_value) {
debug("%s checksum status failed.\n", __func__);
return -1;
}
return 0;
}
int cs4340_config(struct phy_device *phydev)
{
cs4340_phy_init(phydev);
return 0;
}
int cs4340_probe(struct phy_device *phydev)
{
phydev->flags = PHY_FLAG_BROKEN_RESET;
return 0;
}
int cs4340_startup(struct phy_device *phydev)
{
phydev->link = 1;
/* For now just lie and say it's 10G all the time */
phydev->speed = SPEED_10000;
phydev->duplex = DUPLEX_FULL;
return 0;
}
int cs4223_phy_init(struct phy_device *phydev)
{
int reg_value;
reg_value = phy_read(phydev, 0x00, CS4223_EEPROM_STATUS);
if (!(reg_value & CS4223_EEPROM_FIRMWARE_LOADDONE)) {
printf("%s CS4223 Firmware not present in EERPOM\n", __func__);
return -ENOSYS;
}
return 0;
}
int cs4223_config(struct phy_device *phydev)
{
return cs4223_phy_init(phydev);
}
int cs4223_probe(struct phy_device *phydev)
{
phydev->flags = PHY_FLAG_BROKEN_RESET;
return 0;
}
int cs4223_startup(struct phy_device *phydev)
{
phydev->link = 1;
phydev->speed = SPEED_10000;
phydev->duplex = DUPLEX_FULL;
return 0;
}
struct phy_driver cs4340_driver = {
.name = "Cortina CS4315/CS4340",
.uid = PHY_UID_CS4340,
.mask = 0xfffffff0,
.features = PHY_10G_FEATURES,
.mmds = (MDIO_DEVS_PMAPMD | MDIO_DEVS_PCS |
MDIO_DEVS_PHYXS | MDIO_DEVS_AN |
MDIO_DEVS_VEND1 | MDIO_DEVS_VEND2),
.config = &cs4340_config,
.probe = &cs4340_probe,
.startup = &cs4340_startup,
.shutdown = &gen10g_shutdown,
};
struct phy_driver cs4223_driver = {
.name = "Cortina CS4223",
.uid = PHY_UID_CS4223,
.mask = 0x0ffff00f,
.features = PHY_10G_FEATURES,
.mmds = (MDIO_DEVS_PMAPMD | MDIO_DEVS_PCS |
MDIO_DEVS_AN),
.config = &cs4223_config,
.probe = &cs4223_probe,
.startup = &cs4223_startup,
.shutdown = &gen10g_shutdown,
};
int phy_cortina_init(void)
{
phy_register(&cs4340_driver);
phy_register(&cs4223_driver);
return 0;
}
int get_phy_id(struct mii_dev *bus, int addr, int devad, u32 *phy_id)
{
int phy_reg;
/* Cortina PHY has non-standard offset of PHY ID registers */
phy_reg = bus->read(bus, addr, 0, VILLA_GLOBAL_CHIP_ID_LSB);
if (phy_reg < 0)
return -EIO;
*phy_id = (phy_reg & 0xffff) << 16;
phy_reg = bus->read(bus, addr, 0, VILLA_GLOBAL_CHIP_ID_MSB);
if (phy_reg < 0)
return -EIO;
*phy_id |= (phy_reg & 0xffff);
if ((*phy_id == PHY_UID_CS4340) || (*phy_id == PHY_UID_CS4223))
return 0;
/*
* If Cortina PHY not detected,
* try generic way to find PHY ID registers
*/
phy_reg = bus->read(bus, addr, devad, MII_PHYSID1);
if (phy_reg < 0)
return -EIO;
*phy_id = (phy_reg & 0xffff) << 16;
phy_reg = bus->read(bus, addr, devad, MII_PHYSID2);
if (phy_reg < 0)
return -EIO;
*phy_id |= (phy_reg & 0xffff);
return 0;
}
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