457 строки
13 KiB
C
457 строки
13 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* Intel MAX 10 BMC HWMON Driver
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*
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* Copyright (C) 2018-2020 Intel Corporation. All rights reserved.
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*
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*/
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#include <linux/device.h>
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#include <linux/hwmon.h>
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#include <linux/mfd/intel-m10-bmc.h>
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#include <linux/module.h>
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#include <linux/mod_devicetable.h>
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#include <linux/platform_device.h>
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struct m10bmc_sdata {
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unsigned int reg_input;
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unsigned int reg_max;
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unsigned int reg_crit;
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unsigned int reg_hyst;
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unsigned int reg_min;
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unsigned int multiplier;
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const char *label;
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};
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struct m10bmc_hwmon_board_data {
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const struct m10bmc_sdata *tables[hwmon_max];
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const struct hwmon_channel_info **hinfo;
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};
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struct m10bmc_hwmon {
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struct device *dev;
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struct hwmon_chip_info chip;
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char *hw_name;
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struct intel_m10bmc *m10bmc;
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const struct m10bmc_hwmon_board_data *bdata;
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};
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static const struct m10bmc_sdata n3000bmc_temp_tbl[] = {
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{ 0x100, 0x104, 0x108, 0x10c, 0x0, 500, "Board Temperature" },
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{ 0x110, 0x114, 0x118, 0x0, 0x0, 500, "FPGA Die Temperature" },
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{ 0x11c, 0x124, 0x120, 0x0, 0x0, 500, "QSFP0 Temperature" },
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{ 0x12c, 0x134, 0x130, 0x0, 0x0, 500, "QSFP1 Temperature" },
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{ 0x168, 0x0, 0x0, 0x0, 0x0, 500, "Retimer A Temperature" },
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{ 0x16c, 0x0, 0x0, 0x0, 0x0, 500, "Retimer A SerDes Temperature" },
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{ 0x170, 0x0, 0x0, 0x0, 0x0, 500, "Retimer B Temperature" },
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{ 0x174, 0x0, 0x0, 0x0, 0x0, 500, "Retimer B SerDes Temperature" },
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};
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static const struct m10bmc_sdata n3000bmc_in_tbl[] = {
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{ 0x128, 0x0, 0x0, 0x0, 0x0, 1, "QSFP0 Supply Voltage" },
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{ 0x138, 0x0, 0x0, 0x0, 0x0, 1, "QSFP1 Supply Voltage" },
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{ 0x13c, 0x0, 0x0, 0x0, 0x0, 1, "FPGA Core Voltage" },
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{ 0x144, 0x0, 0x0, 0x0, 0x0, 1, "12V Backplane Voltage" },
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{ 0x14c, 0x0, 0x0, 0x0, 0x0, 1, "1.2V Voltage" },
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{ 0x150, 0x0, 0x0, 0x0, 0x0, 1, "12V AUX Voltage" },
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{ 0x158, 0x0, 0x0, 0x0, 0x0, 1, "1.8V Voltage" },
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{ 0x15c, 0x0, 0x0, 0x0, 0x0, 1, "3.3V Voltage" },
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};
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static const struct m10bmc_sdata n3000bmc_curr_tbl[] = {
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{ 0x140, 0x0, 0x0, 0x0, 0x0, 1, "FPGA Core Current" },
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{ 0x148, 0x0, 0x0, 0x0, 0x0, 1, "12V Backplane Current" },
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{ 0x154, 0x0, 0x0, 0x0, 0x0, 1, "12V AUX Current" },
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};
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static const struct m10bmc_sdata n3000bmc_power_tbl[] = {
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{ 0x160, 0x0, 0x0, 0x0, 0x0, 1000, "Board Power" },
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};
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static const struct hwmon_channel_info *n3000bmc_hinfo[] = {
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HWMON_CHANNEL_INFO(temp,
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HWMON_T_INPUT | HWMON_T_MAX | HWMON_T_MAX_HYST |
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HWMON_T_CRIT | HWMON_T_CRIT_HYST | HWMON_T_LABEL,
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HWMON_T_INPUT | HWMON_T_MAX | HWMON_T_CRIT |
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HWMON_T_LABEL,
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HWMON_T_INPUT | HWMON_T_MAX | HWMON_T_CRIT |
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HWMON_T_LABEL,
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HWMON_T_INPUT | HWMON_T_MAX | HWMON_T_CRIT |
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HWMON_T_LABEL,
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HWMON_T_INPUT | HWMON_T_LABEL,
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HWMON_T_INPUT | HWMON_T_LABEL,
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HWMON_T_INPUT | HWMON_T_LABEL,
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HWMON_T_INPUT | HWMON_T_LABEL),
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HWMON_CHANNEL_INFO(in,
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HWMON_I_INPUT | HWMON_I_LABEL,
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HWMON_I_INPUT | HWMON_I_LABEL,
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HWMON_I_INPUT | HWMON_I_LABEL,
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HWMON_I_INPUT | HWMON_I_LABEL,
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HWMON_I_INPUT | HWMON_I_LABEL,
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HWMON_I_INPUT | HWMON_I_LABEL,
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HWMON_I_INPUT | HWMON_I_LABEL,
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HWMON_I_INPUT | HWMON_I_LABEL),
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HWMON_CHANNEL_INFO(curr,
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HWMON_C_INPUT | HWMON_C_LABEL,
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HWMON_C_INPUT | HWMON_C_LABEL,
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HWMON_C_INPUT | HWMON_C_LABEL),
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HWMON_CHANNEL_INFO(power,
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HWMON_P_INPUT | HWMON_P_LABEL),
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NULL
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};
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static const struct m10bmc_sdata d5005bmc_temp_tbl[] = {
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{ 0x100, 0x104, 0x108, 0x10c, 0x0, 500, "Board Inlet Air Temperature" },
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{ 0x110, 0x114, 0x118, 0x0, 0x0, 500, "FPGA Core Temperature" },
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{ 0x11c, 0x120, 0x124, 0x128, 0x0, 500, "Board Exhaust Air Temperature" },
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{ 0x12c, 0x130, 0x134, 0x0, 0x0, 500, "FPGA Transceiver Temperature" },
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{ 0x138, 0x13c, 0x140, 0x144, 0x0, 500, "RDIMM0 Temperature" },
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{ 0x148, 0x14c, 0x150, 0x154, 0x0, 500, "RDIMM1 Temperature" },
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{ 0x158, 0x15c, 0x160, 0x164, 0x0, 500, "RDIMM2 Temperature" },
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{ 0x168, 0x16c, 0x170, 0x174, 0x0, 500, "RDIMM3 Temperature" },
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{ 0x178, 0x17c, 0x180, 0x0, 0x0, 500, "QSFP0 Temperature" },
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{ 0x188, 0x18c, 0x190, 0x0, 0x0, 500, "QSFP1 Temperature" },
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{ 0x1a0, 0x1a4, 0x1a8, 0x0, 0x0, 500, "3.3v Temperature" },
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{ 0x1bc, 0x1c0, 0x1c4, 0x0, 0x0, 500, "VCCERAM Temperature" },
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{ 0x1d8, 0x1dc, 0x1e0, 0x0, 0x0, 500, "VCCR Temperature" },
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{ 0x1f4, 0x1f8, 0x1fc, 0x0, 0x0, 500, "VCCT Temperature" },
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{ 0x210, 0x214, 0x218, 0x0, 0x0, 500, "1.8v Temperature" },
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{ 0x22c, 0x230, 0x234, 0x0, 0x0, 500, "12v Backplane Temperature" },
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{ 0x248, 0x24c, 0x250, 0x0, 0x0, 500, "12v AUX Temperature" },
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};
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static const struct m10bmc_sdata d5005bmc_in_tbl[] = {
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{ 0x184, 0x0, 0x0, 0x0, 0x0, 1, "QSFP0 Supply Voltage" },
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{ 0x194, 0x0, 0x0, 0x0, 0x0, 1, "QSFP1 Supply Voltage" },
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{ 0x198, 0x0, 0x0, 0x0, 0x0, 1, "FPGA Core Voltage" },
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{ 0x1ac, 0x1b0, 0x1b4, 0x0, 0x0, 1, "3.3v Voltage" },
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{ 0x1c8, 0x1cc, 0x1d0, 0x0, 0x0, 1, "VCCERAM Voltage" },
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{ 0x1e4, 0x1e8, 0x1ec, 0x0, 0x0, 1, "VCCR Voltage" },
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{ 0x200, 0x204, 0x208, 0x0, 0x0, 1, "VCCT Voltage" },
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{ 0x21c, 0x220, 0x224, 0x0, 0x0, 1, "1.8v Voltage" },
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{ 0x238, 0x0, 0x0, 0x0, 0x23c, 1, "12v Backplane Voltage" },
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{ 0x254, 0x0, 0x0, 0x0, 0x258, 1, "12v AUX Voltage" },
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};
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static const struct m10bmc_sdata d5005bmc_curr_tbl[] = {
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{ 0x19c, 0x0, 0x0, 0x0, 0x0, 1, "FPGA Core Current" },
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{ 0x1b8, 0x0, 0x0, 0x0, 0x0, 1, "3.3v Current" },
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{ 0x1d4, 0x0, 0x0, 0x0, 0x0, 1, "VCCERAM Current" },
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{ 0x1f0, 0x0, 0x0, 0x0, 0x0, 1, "VCCR Current" },
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{ 0x20c, 0x0, 0x0, 0x0, 0x0, 1, "VCCT Current" },
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{ 0x228, 0x0, 0x0, 0x0, 0x0, 1, "1.8v Current" },
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{ 0x240, 0x244, 0x0, 0x0, 0x0, 1, "12v Backplane Current" },
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{ 0x25c, 0x260, 0x0, 0x0, 0x0, 1, "12v AUX Current" },
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};
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static const struct m10bmc_hwmon_board_data n3000bmc_hwmon_bdata = {
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.tables = {
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[hwmon_temp] = n3000bmc_temp_tbl,
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[hwmon_in] = n3000bmc_in_tbl,
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[hwmon_curr] = n3000bmc_curr_tbl,
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[hwmon_power] = n3000bmc_power_tbl,
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},
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.hinfo = n3000bmc_hinfo,
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};
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static const struct hwmon_channel_info *d5005bmc_hinfo[] = {
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HWMON_CHANNEL_INFO(temp,
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HWMON_T_INPUT | HWMON_T_MAX | HWMON_T_MAX_HYST |
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HWMON_T_CRIT | HWMON_T_CRIT_HYST | HWMON_T_LABEL,
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HWMON_T_INPUT | HWMON_T_MAX | HWMON_T_CRIT |
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HWMON_T_LABEL,
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HWMON_T_INPUT | HWMON_T_MAX | HWMON_T_MAX_HYST |
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HWMON_T_CRIT | HWMON_T_CRIT_HYST | HWMON_T_LABEL,
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HWMON_T_INPUT | HWMON_T_MAX | HWMON_T_CRIT |
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HWMON_T_LABEL,
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HWMON_T_INPUT | HWMON_T_MAX | HWMON_T_MAX_HYST |
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HWMON_T_CRIT | HWMON_T_CRIT_HYST | HWMON_T_LABEL,
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HWMON_T_INPUT | HWMON_T_MAX | HWMON_T_MAX_HYST |
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HWMON_T_CRIT | HWMON_T_CRIT_HYST | HWMON_T_LABEL,
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HWMON_T_INPUT | HWMON_T_MAX | HWMON_T_MAX_HYST |
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HWMON_T_CRIT | HWMON_T_CRIT_HYST | HWMON_T_LABEL,
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HWMON_T_INPUT | HWMON_T_MAX | HWMON_T_MAX_HYST |
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HWMON_T_CRIT | HWMON_T_CRIT_HYST | HWMON_T_LABEL,
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HWMON_T_INPUT | HWMON_T_MAX | HWMON_T_CRIT |
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HWMON_T_LABEL,
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HWMON_T_INPUT | HWMON_T_MAX | HWMON_T_CRIT |
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HWMON_T_LABEL,
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HWMON_T_INPUT | HWMON_T_MAX | HWMON_T_CRIT |
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HWMON_T_LABEL,
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HWMON_T_INPUT | HWMON_T_MAX | HWMON_T_CRIT |
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HWMON_T_LABEL,
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HWMON_T_INPUT | HWMON_T_MAX | HWMON_T_CRIT |
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HWMON_T_LABEL,
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HWMON_T_INPUT | HWMON_T_MAX | HWMON_T_CRIT |
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HWMON_T_LABEL,
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HWMON_T_INPUT | HWMON_T_MAX | HWMON_T_CRIT |
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HWMON_T_LABEL,
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HWMON_T_INPUT | HWMON_T_MAX | HWMON_T_CRIT |
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HWMON_T_LABEL,
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HWMON_T_INPUT | HWMON_T_MAX | HWMON_T_CRIT |
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HWMON_T_LABEL),
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HWMON_CHANNEL_INFO(in,
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HWMON_I_INPUT | HWMON_I_LABEL,
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HWMON_I_INPUT | HWMON_I_LABEL,
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HWMON_I_INPUT | HWMON_I_LABEL,
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HWMON_I_INPUT | HWMON_I_MAX | HWMON_I_CRIT |
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HWMON_I_LABEL,
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HWMON_I_INPUT | HWMON_I_MAX | HWMON_I_CRIT |
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HWMON_I_LABEL,
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HWMON_I_INPUT | HWMON_I_MAX | HWMON_I_CRIT |
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HWMON_I_LABEL,
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HWMON_I_INPUT | HWMON_I_MAX | HWMON_I_CRIT |
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HWMON_I_LABEL,
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HWMON_I_INPUT | HWMON_I_MAX | HWMON_I_CRIT |
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HWMON_I_LABEL,
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HWMON_I_INPUT | HWMON_I_MIN | HWMON_I_LABEL,
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HWMON_I_INPUT | HWMON_I_MIN | HWMON_I_LABEL),
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HWMON_CHANNEL_INFO(curr,
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HWMON_C_INPUT | HWMON_C_LABEL,
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HWMON_C_INPUT | HWMON_C_LABEL,
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HWMON_C_INPUT | HWMON_C_LABEL,
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HWMON_C_INPUT | HWMON_C_LABEL,
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HWMON_C_INPUT | HWMON_C_LABEL,
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HWMON_C_INPUT | HWMON_C_LABEL,
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HWMON_C_INPUT | HWMON_C_MAX | HWMON_C_LABEL,
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HWMON_C_INPUT | HWMON_C_MAX | HWMON_C_LABEL),
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NULL
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};
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static const struct m10bmc_hwmon_board_data d5005bmc_hwmon_bdata = {
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.tables = {
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[hwmon_temp] = d5005bmc_temp_tbl,
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[hwmon_in] = d5005bmc_in_tbl,
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[hwmon_curr] = d5005bmc_curr_tbl,
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},
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.hinfo = d5005bmc_hinfo,
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};
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static umode_t
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m10bmc_hwmon_is_visible(const void *data, enum hwmon_sensor_types type,
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u32 attr, int channel)
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{
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return 0444;
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}
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static const struct m10bmc_sdata *
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find_sensor_data(struct m10bmc_hwmon *hw, enum hwmon_sensor_types type,
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int channel)
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{
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const struct m10bmc_sdata *tbl;
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tbl = hw->bdata->tables[type];
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if (!tbl)
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return ERR_PTR(-EOPNOTSUPP);
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return &tbl[channel];
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}
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static int do_sensor_read(struct m10bmc_hwmon *hw,
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const struct m10bmc_sdata *data,
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unsigned int regoff, long *val)
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{
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unsigned int regval;
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int ret;
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ret = m10bmc_sys_read(hw->m10bmc, regoff, ®val);
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if (ret)
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return ret;
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/*
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* BMC Firmware will return 0xdeadbeef if the sensor value is invalid
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* at that time. This usually happens on sensor channels which connect
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* to external pluggable modules, e.g. QSFP temperature and voltage.
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* When the QSFP is unplugged from cage, driver will get 0xdeadbeef
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* from their registers.
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*/
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if (regval == 0xdeadbeef)
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return -ENODATA;
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*val = regval * data->multiplier;
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return 0;
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}
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static int m10bmc_hwmon_read(struct device *dev, enum hwmon_sensor_types type,
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u32 attr, int channel, long *val)
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{
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struct m10bmc_hwmon *hw = dev_get_drvdata(dev);
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unsigned int reg = 0, reg_hyst = 0;
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const struct m10bmc_sdata *data;
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long hyst, value;
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int ret;
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data = find_sensor_data(hw, type, channel);
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if (IS_ERR(data))
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return PTR_ERR(data);
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switch (type) {
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case hwmon_temp:
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switch (attr) {
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case hwmon_temp_input:
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reg = data->reg_input;
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break;
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case hwmon_temp_max_hyst:
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reg_hyst = data->reg_hyst;
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fallthrough;
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case hwmon_temp_max:
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reg = data->reg_max;
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break;
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case hwmon_temp_crit_hyst:
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reg_hyst = data->reg_hyst;
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fallthrough;
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case hwmon_temp_crit:
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reg = data->reg_crit;
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break;
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default:
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return -EOPNOTSUPP;
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}
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break;
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case hwmon_in:
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switch (attr) {
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case hwmon_in_input:
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reg = data->reg_input;
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break;
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case hwmon_in_max:
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reg = data->reg_max;
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break;
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case hwmon_in_crit:
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reg = data->reg_crit;
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break;
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case hwmon_in_min:
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reg = data->reg_min;
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break;
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default:
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return -EOPNOTSUPP;
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}
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break;
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case hwmon_curr:
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switch (attr) {
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case hwmon_curr_input:
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reg = data->reg_input;
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break;
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case hwmon_curr_max:
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reg = data->reg_max;
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break;
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case hwmon_curr_crit:
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reg = data->reg_crit;
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break;
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default:
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return -EOPNOTSUPP;
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}
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break;
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case hwmon_power:
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switch (attr) {
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case hwmon_power_input:
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reg = data->reg_input;
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break;
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default:
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return -EOPNOTSUPP;
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}
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break;
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default:
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return -EOPNOTSUPP;
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}
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if (!reg)
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return -EOPNOTSUPP;
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ret = do_sensor_read(hw, data, reg, &value);
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if (ret)
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return ret;
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if (reg_hyst) {
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ret = do_sensor_read(hw, data, reg_hyst, &hyst);
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if (ret)
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return ret;
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value -= hyst;
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}
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*val = value;
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return 0;
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}
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static int m10bmc_hwmon_read_string(struct device *dev,
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enum hwmon_sensor_types type,
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u32 attr, int channel, const char **str)
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{
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struct m10bmc_hwmon *hw = dev_get_drvdata(dev);
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const struct m10bmc_sdata *data;
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data = find_sensor_data(hw, type, channel);
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if (IS_ERR(data))
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return PTR_ERR(data);
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*str = data->label;
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return 0;
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}
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static const struct hwmon_ops m10bmc_hwmon_ops = {
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.is_visible = m10bmc_hwmon_is_visible,
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.read = m10bmc_hwmon_read,
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.read_string = m10bmc_hwmon_read_string,
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};
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|
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static int m10bmc_hwmon_probe(struct platform_device *pdev)
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{
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const struct platform_device_id *id = platform_get_device_id(pdev);
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struct intel_m10bmc *m10bmc = dev_get_drvdata(pdev->dev.parent);
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struct device *hwmon_dev, *dev = &pdev->dev;
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struct m10bmc_hwmon *hw;
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int i;
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|
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hw = devm_kzalloc(dev, sizeof(*hw), GFP_KERNEL);
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if (!hw)
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return -ENOMEM;
|
|
|
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hw->dev = dev;
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hw->m10bmc = m10bmc;
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hw->bdata = (const struct m10bmc_hwmon_board_data *)id->driver_data;
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|
|
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hw->chip.info = hw->bdata->hinfo;
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hw->chip.ops = &m10bmc_hwmon_ops;
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|
|
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hw->hw_name = devm_kstrdup(dev, id->name, GFP_KERNEL);
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if (!hw->hw_name)
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|
return -ENOMEM;
|
|
|
|
for (i = 0; hw->hw_name[i]; i++)
|
|
if (hwmon_is_bad_char(hw->hw_name[i]))
|
|
hw->hw_name[i] = '_';
|
|
|
|
hwmon_dev = devm_hwmon_device_register_with_info(dev, hw->hw_name,
|
|
hw, &hw->chip, NULL);
|
|
return PTR_ERR_OR_ZERO(hwmon_dev);
|
|
}
|
|
|
|
static const struct platform_device_id intel_m10bmc_hwmon_ids[] = {
|
|
{
|
|
.name = "n3000bmc-hwmon",
|
|
.driver_data = (unsigned long)&n3000bmc_hwmon_bdata,
|
|
},
|
|
{
|
|
.name = "d5005bmc-hwmon",
|
|
.driver_data = (unsigned long)&d5005bmc_hwmon_bdata,
|
|
},
|
|
{ }
|
|
};
|
|
|
|
static struct platform_driver intel_m10bmc_hwmon_driver = {
|
|
.probe = m10bmc_hwmon_probe,
|
|
.driver = {
|
|
.name = "intel-m10-bmc-hwmon",
|
|
},
|
|
.id_table = intel_m10bmc_hwmon_ids,
|
|
};
|
|
module_platform_driver(intel_m10bmc_hwmon_driver);
|
|
|
|
MODULE_DEVICE_TABLE(platform, intel_m10bmc_hwmon_ids);
|
|
MODULE_AUTHOR("Intel Corporation");
|
|
MODULE_DESCRIPTION("Intel MAX 10 BMC hardware monitor");
|
|
MODULE_LICENSE("GPL");
|