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/*
* This file is part of the coreboot project.
*
* Copyright (C) 2016-2017 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 <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 <bootstate.h>
#include "nc_fpga.h"
static void *nc_fpga_bar0;
#define FPGA_SET_PARAM(src, dst) \
{ \
uint32_t var; \
if (hwilib_get_field(src, (uint8_t *)&var, sizeof(var))) \
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, 1) != 1) ||
(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;
/* Program sensor selection and temperature thresholds. */
FPGA_SET_PARAM(FANSensorSelect, ctrl->sensorselect);
FPGA_SET_PARAM(T_Warn, ctrl->t_warn);
FPGA_SET_PARAM(T_Crit, ctrl->t_crit);
}
static void init_fan_ctrl (void *base_adr)
{
uint8_t mask = 0, freeze_disable = 0, fan_req = 0;
volatile fan_ctrl_t *ctrl = (fan_ctrl_t *)base_adr;
/* Program all needed fields of FAN controller. */
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);
FPGA_SET_PARAM(FANStartSpeed, ctrl->fanmin);
/* Set freeze and FAN configuration. */
if ((hwilib_get_field(FF_FanReq, &fan_req, 1) == 1) &&
(hwilib_get_field(FF_FreezeDis, &freeze_disable, 1) == 1)) {
if (!fan_req)
mask = 1;
else if (fan_req && !freeze_disable)
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;
/* Save BAR0 address so that it can be used on all NC_FPGA devices to
set the FW_DONE bit before jumping to payload. */
nc_fpga_bar0 = bar0_ptr;
/* 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);
if (cap & NC_CAP1_DSAVE_NMI_DELAY) {
uint16_t *dsave_ptr = (uint16_t *)(bar0_ptr + NC_DSAVE_OFFSET);
FPGA_SET_PARAM(NvramVirtTimeDsaveReset, *dsave_ptr);
}
if (cap & NC_CAP1_BL_BRIGHTNESS_CTRL) {
uint8_t *bl_bn_ptr =
(uint8_t *)(bar0_ptr + NC_BL_BRIGHTNESS_OFFSET);
uint8_t *bl_pwm_ptr = (uint8_t *)(bar0_ptr + NC_BL_PWM_OFFSET);
FPGA_SET_PARAM(BL_Brightness, *bl_bn_ptr);
FPGA_SET_PARAM(PF_PwmFreq, *bl_pwm_ptr);
}
}
#if IS_ENABLED(CONFIG_NC_FPGA_NOTIFY_CB_READY)
/* Set FW_DONE bit in FPGA before jumping to payload. */
static void set_fw_done(void *unused)
{
uint32_t reg;
if (nc_fpga_bar0) {
reg = read32(nc_fpga_bar0 + NC_DIAG_CTRL_OFFSET);
reg |= NC_DIAG_FW_DONE;
write32(nc_fpga_bar0 + NC_DIAG_CTRL_OFFSET, reg);
}
}
BOOT_STATE_INIT_ENTRY(BS_PAYLOAD_BOOT, BS_ON_ENTRY, set_fw_done, NULL);
#endif
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[] = { 0x4080, 0x4091, 0 };
static const struct pci_driver nc_fpga_driver __pci_driver = {
.ops = &nc_fpga_ops,
.vendor = PCI_VENDOR_ID_SIEMENS,
.devices = nc_fpga_device_ids,
};
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