| /* |
| * This file is part of the coreboot project. |
| * |
| * Copyright (C) 2016 Siemens AG. |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License as published by |
| * the Free Software Foundation; version 2 of the License. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| */ |
| |
| #include <types.h> |
| #include <console/console.h> |
| #include <device/pci.h> |
| #include <device/pci_ids.h> |
| #include <device/pci_ops.h> |
| #include <device/pci_def.h> |
| #include <string.h> |
| #include <delay.h> |
| #include <hwilib.h> |
| #include "nc_fpga.h" |
| |
| #define FPGA_SET_PARAM(src, dst) \ |
| { \ |
| typeof(dst) var; \ |
| size_t len = sizeof(var); \ |
| if (hwilib_get_field(src, (uint8_t *)&var, len) == len) \ |
| dst = (typeof(dst))(var); \ |
| } |
| |
| static void init_temp_mon (void *base_adr) |
| { |
| uint32_t cc[5], i = 0; |
| uint8_t num = 0; |
| volatile fan_ctrl_t *ctrl = (fan_ctrl_t *)base_adr; |
| |
| /* Program sensor delay first. */ |
| FPGA_SET_PARAM(FANSensorDelay, ctrl->sensordelay); |
| /* Program correction curve for every used sensor. */ |
| if (hwilib_get_field(FANSensorNum, &num, sizeof(num) != sizeof(num)) || |
| (num == 0) || (num > MAX_NUM_SENSORS)) |
| return; |
| for (i = 0; i < num; i ++) { |
| if (hwilib_get_field(FANSensorCfg0 + i, (uint8_t *)&cc[0], |
| sizeof(cc)) == sizeof(cc)) { |
| ctrl->sensorcfg[cc[0]].rmin = cc[1] & 0xffff; |
| ctrl->sensorcfg[cc[0]].rmax = cc[2] & 0xffff; |
| ctrl->sensorcfg[cc[0]].nmin = cc[3] & 0xffff; |
| ctrl->sensorcfg[cc[0]].nmax = cc[4] & 0xffff; |
| } |
| } |
| ctrl->sensornum = num; |
| } |
| |
| static void init_fan_ctrl (void *base_adr) |
| { |
| uint8_t mask = 0, freeze_mode = 0, fan_req = 0; |
| volatile fan_ctrl_t *ctrl = (fan_ctrl_t *)base_adr; |
| |
| /* Program all needed fields of FAN controller. */ |
| FPGA_SET_PARAM(FANSensorSelect, ctrl->sensorselect); |
| FPGA_SET_PARAM(T_Warn, ctrl->t_warn); |
| FPGA_SET_PARAM(T_Crit, ctrl->t_crit); |
| FPGA_SET_PARAM(FANSamplingTime, ctrl->samplingtime); |
| FPGA_SET_PARAM(FANSetPoint, ctrl->setpoint); |
| FPGA_SET_PARAM(FANHystCtrl, ctrl->hystctrl); |
| FPGA_SET_PARAM(FANHystVal, ctrl->hystval); |
| FPGA_SET_PARAM(FANHystThreshold, ctrl->hystthreshold); |
| FPGA_SET_PARAM(FANKp, ctrl->kp); |
| FPGA_SET_PARAM(FANKi, ctrl->ki); |
| FPGA_SET_PARAM(FANKd, ctrl->kd); |
| FPGA_SET_PARAM(FANMaxSpeed, ctrl->fanmax); |
| /* Set freeze and FAN configuration. */ |
| if ((hwilib_get_field(FF_FanReq, &fan_req, 1) == 1) && |
| (hwilib_get_field(FF_FreezeDis, &freeze_mode, 1) == 1)) { |
| if (!fan_req) |
| mask = 1; |
| else if (fan_req && freeze_mode) |
| mask = 2; |
| else |
| mask = 3; |
| ctrl->fanmon = mask << 10; |
| } |
| } |
| |
| /** \brief This function is the driver entry point for the init phase |
| * of the PCI bus allocator. It will initialize all the needed parts |
| * of NC_FPGA. |
| * @param *dev Pointer to the used PCI device |
| * @return void Nothing is given back |
| */ |
| static void nc_fpga_init(struct device *dev) |
| { |
| void *bar0_ptr = NULL; |
| uint8_t cmd_reg; |
| uint32_t cap = 0; |
| |
| /* All we need is mapped to BAR 0, get the address. */ |
| bar0_ptr = (void *)(pci_read_config32(dev, PCI_BASE_ADDRESS_0) & |
| ~PCI_BASE_ADDRESS_MEM_ATTR_MASK); |
| cmd_reg = pci_read_config8(dev, PCI_COMMAND); |
| /* Ensure BAR0 has a valid value. */ |
| if (!bar0_ptr || !(cmd_reg & PCI_COMMAND_MEMORY)) |
| return; |
| /* Ensure this is really a NC FPGA by checking magic register. */ |
| if (read32(bar0_ptr + NC_MAGIC_OFFSET) != NC_FPGA_MAGIC) |
| return; |
| /* Open hwinfo block. */ |
| if (hwilib_find_blocks("hwinfo.hex") != CB_SUCCESS) |
| return; |
| /* Set up FAN controller and temperature monitor according to */ |
| /* capability bits. */ |
| cap = read32(bar0_ptr + NC_CAP1_OFFSET); |
| if (cap & (NC_CAP1_TEMP_MON | NC_CAP1_FAN_CTRL)) |
| init_temp_mon(bar0_ptr + NC_FANMON_CTRL_OFFSET); |
| if (cap & NC_CAP1_FAN_CTRL) |
| init_fan_ctrl(bar0_ptr + NC_FANMON_CTRL_OFFSET); |
| } |
| |
| static struct device_operations nc_fpga_ops = { |
| .read_resources = pci_dev_read_resources, |
| .set_resources = pci_dev_set_resources, |
| .enable_resources = pci_dev_enable_resources, |
| .init = nc_fpga_init, |
| .scan_bus = 0, |
| .ops_pci = 0, |
| }; |
| |
| static const unsigned short nc_fpga_device_ids[] = { 0x4091, 0 }; |
| |
| static const struct pci_driver nc_fpga_driver __pci_driver = { |
| .ops = &nc_fpga_ops, |
| .vendor = 0x110A, |
| .devices = nc_fpga_device_ids, |
| }; |