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