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u-boot/drivers/net/phy/cortina.c
Bin Meng 723b43daec blk: Remove various places that do flush cache after read 
All these places seem to inherit the codes from the MMC driver where
a FIXME was put in the comment. However the correct operation after
read should be cache invalidate, not flush.

The underlying drivers should be responsible for the cache operation.
Remove these codes completely.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Stefan Roese <sr@denx.de>
Reviewed-by: York Sun <york.sun@nxp.com>
Reviewed-by: Joe Hershberger <joe.hershberger@ni.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Tested-by: York Sun <york.sun@nxp.com>
2017-09-15 08:05:10 -04:00

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/*
* Cortina CS4315/CS4340 10G PHY drivers
*
* SPDX-License-Identifier: GPL-2.0+
*
* Copyright 2014 Freescale Semiconductor, Inc.
*
*/
#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
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);
}
}
int cs4340_phy_init(struct phy_device *phydev)
{
int timeout = 100; /* 100ms */
int reg_value;
/* 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);
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;
}
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,
};
int phy_cortina_init(void)
{
phy_register(&cs4340_driver);
return 0;
}
int get_phy_id(struct mii_dev *bus, int addr, int devad, u32 *phy_id)
{
int phy_reg;
bool is_cortina_phy = false;
switch (addr) {
#ifdef CORTINA_PHY_ADDR1
case CORTINA_PHY_ADDR1:
#endif
#ifdef CORTINA_PHY_ADDR2
case CORTINA_PHY_ADDR2:
#endif
#ifdef CORTINA_PHY_ADDR3
case CORTINA_PHY_ADDR3:
#endif
#ifdef CORTINA_PHY_ADDR4
case CORTINA_PHY_ADDR4:
#endif
is_cortina_phy = true;
break;
default:
break;
}
/* Cortina PHY has non-standard offset of PHY ID registers */
if (is_cortina_phy)
phy_reg = bus->read(bus, addr, 0, VILLA_GLOBAL_CHIP_ID_LSB);
else
phy_reg = bus->read(bus, addr, devad, MII_PHYSID1);
if (phy_reg < 0)
return -EIO;
*phy_id = (phy_reg & 0xffff) << 16;
if (is_cortina_phy)
phy_reg = bus->read(bus, addr, 0, VILLA_GLOBAL_CHIP_ID_MSB);
else
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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