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/* SPDX-License-Identifier: GPL-2.0-only */
#include <arch/io.h>
#include <acpi/acpi.h>
#include <device/device.h>
#include <device/pci.h>
#include <device/pci_ops.h>
#include <stdint.h>
#include <elog.h>
#include "pch.h"
static void pch_log_standard_gpe(u32 gpe0_sts_reg, u32 gpe0_en_reg)
{
u32 gpe0_en = inl(get_pmbase() + gpe0_en_reg);
u32 gpe0_sts = inl(get_pmbase() + gpe0_sts_reg) & gpe0_en;
/* PME (TODO: determine wake device) */
if (gpe0_sts & PME_STS)
elog_add_event_wake(ELOG_WAKE_SOURCE_PME, 0);
/* Internal PME (TODO: determine wake device) */
if (gpe0_sts & PME_B0_STS)
elog_add_event_wake(ELOG_WAKE_SOURCE_PME_INTERNAL, 0);
/* SMBUS Wake */
if (gpe0_sts & SMB_WAK_STS)
elog_add_event_wake(ELOG_WAKE_SOURCE_SMBUS, 0);
}
static void pch_log_gpio_gpe(u32 gpe0_sts_reg, u32 gpe0_en_reg, int start)
{
/* GPE Bank 1 is GPIO 0-31 */
u32 gpe0_en = inl(get_pmbase() + gpe0_en_reg);
u32 gpe0_sts = inl(get_pmbase() + gpe0_sts_reg) & gpe0_en;
int i;
for (i = 0; i <= 31; i++) {
if (gpe0_sts & (1 << i))
elog_add_event_wake(ELOG_WAKE_SOURCE_GPE, i + start);
}
}
static void pch_log_gpe(void)
{
int i;
u16 pmbase = get_pmbase();
u32 gpe0_sts, gpe0_en;
int gpe0_high_gpios[] = {
[0] = 27,
[24] = 17,
[25] = 19,
[26] = 21,
[27] = 22,
[28] = 43,
[29] = 56,
[30] = 57,
[31] = 60
};
pch_log_standard_gpe(GPE0_EN, GPE0_STS);
/* GPIO 0-15 */
gpe0_en = inw(pmbase + GPE0_EN + sizeof(uint16_t));
gpe0_sts = inw(pmbase + GPE0_STS + sizeof(uint16_t)) & gpe0_en;
for (i = 0; i <= 15; i++) {
if (gpe0_sts & (1 << i))
elog_add_event_wake(ELOG_WAKE_SOURCE_GPE, i);
}
/*
* Now check and log upper status bits
*/
gpe0_en = inl(pmbase + GPE0_EN + sizeof(uint32_t));
gpe0_sts = inl(pmbase + GPE0_STS + sizeof(uint32_t)) & gpe0_en;
for (i = 0; i <= 31; i++) {
if (!gpe0_high_gpios[i])
continue;
if (gpe0_sts & (1 << i))
elog_add_event_wake(ELOG_WAKE_SOURCE_GPE,
gpe0_high_gpios[i]);
}
}
static void pch_lp_log_gpe(void)
{
/* Standard GPE are in GPE set 4 */
pch_log_standard_gpe(LP_GPE0_STS_4, LP_GPE0_EN_4);
/* Log GPIO events in set 1-3 */
pch_log_gpio_gpe(LP_GPE0_STS_1, LP_GPE0_EN_1, 0);
pch_log_gpio_gpe(LP_GPE0_STS_2, LP_GPE0_EN_2, 32);
pch_log_gpio_gpe(LP_GPE0_STS_3, LP_GPE0_EN_3, 64);
}
void pch_log_state(void)
{
u16 pm1_sts, gen_pmcon_3, tco2_sts;
u8 gen_pmcon_2;
struct device *lpc = pcidev_on_root(0x1f, 0);
if (!lpc)
return;
pm1_sts = inw(get_pmbase() + PM1_STS);
tco2_sts = inw(get_pmbase() + TCO2_STS);
gen_pmcon_2 = pci_read_config8(lpc, GEN_PMCON_2);
gen_pmcon_3 = pci_read_config16(lpc, GEN_PMCON_3);
/* PWR_FLR Power Failure */
if (gen_pmcon_2 & PWROK_FLR)
elog_add_event(ELOG_TYPE_POWER_FAIL);
/* SUS Well Power Failure */
if (gen_pmcon_3 & SUS_PWR_FLR)
elog_add_event(ELOG_TYPE_SUS_POWER_FAIL);
/* SYS_PWROK Failure */
if (gen_pmcon_2 & SYSPWR_FLR)
elog_add_event(ELOG_TYPE_SYS_PWROK_FAIL);
/* PWROK Failure */
if (gen_pmcon_2 & PWROK_FLR)
elog_add_event(ELOG_TYPE_PWROK_FAIL);
/* Second TCO Timeout */
if (tco2_sts & TCO2_STS_SECOND_TO)
elog_add_event(ELOG_TYPE_TCO_RESET);
/* Power Button Override */
if (pm1_sts & PRBTNOR_STS)
elog_add_event(ELOG_TYPE_POWER_BUTTON_OVERRIDE);
/* System Reset Status (reset button pushed) */
if (gen_pmcon_2 & SYSTEM_RESET_STS)
elog_add_event(ELOG_TYPE_RESET_BUTTON);
/* General Reset Status */
if (gen_pmcon_3 & GEN_RST_STS)
elog_add_event(ELOG_TYPE_SYSTEM_RESET);
/* ACPI Wake */
if (pm1_sts & WAK_STS)
elog_add_event_byte(ELOG_TYPE_ACPI_WAKE,
acpi_is_wakeup_s3() ? 3 : 5);
/*
* Wake sources
*/
/* Power Button */
if (pm1_sts & PWRBTN_STS)
elog_add_event_wake(ELOG_WAKE_SOURCE_PWRBTN, 0);
/* RTC */
if (pm1_sts & RTC_STS)
elog_add_event_wake(ELOG_WAKE_SOURCE_RTC, 0);
/* PCI Express (TODO: determine wake device) */
if (pm1_sts & PCIEXPWAK_STS)
elog_add_event_wake(ELOG_WAKE_SOURCE_PCIE, 0);
/* GPE */
if (pch_is_lp())
pch_lp_log_gpe();
else
pch_log_gpe();
}
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