elog.c

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/* SPDX-License-Identifier: GPL-2.0-only */
 
#include <acpi/acpi.h>
#include <acpi/acpi_pm.h>
#include <device/device.h>
#include <device/pci.h>
#include <elog.h>
#include <soc/iomap.h>
#include <soc/pm.h>
#include <stdint.h>
 
static void log_power_and_resets(const struct chipset_power_state *ps)
{
        if (ps->gen_pmcon1 & PWR_FLR) {
                elog_add_event(ELOG_TYPE_POWER_FAIL);
                elog_add_event(ELOG_TYPE_PWROK_FAIL);
        }
 
        if (ps->gen_pmcon1 & SUS_PWR_FLR)
                elog_add_event(ELOG_TYPE_SUS_POWER_FAIL);
 
        if (ps->gen_pmcon1 & RPS)
                elog_add_event(ELOG_TYPE_RTC_RESET);
 
        if (ps->tco_sts & SECOND_TO_STS)
                elog_add_event(ELOG_TYPE_TCO_RESET);
 
        if (ps->pm1_sts & PRBTNOR_STS)
                elog_add_event(ELOG_TYPE_POWER_BUTTON_OVERRIDE);
 
        if (ps->gen_pmcon1 & SRS)
                elog_add_event(ELOG_TYPE_RESET_BUTTON);
 
        if (ps->gen_pmcon1 & GEN_RST_STS)
                elog_add_event(ELOG_TYPE_SYSTEM_RESET);
}
 
static void log_wake_events(const struct chipset_power_state *ps)
{
        const uint32_t pcie_wake_mask = PCIE_WAKE3_STS | PCIE_WAKE2_STS |
                                        PCIE_WAKE1_STS | PCIE_WAKE0_STS | PCI_EXP_STS;
 
        uint32_t gpe0_sts;
        uint32_t gpio_mask;
        int i;
 
        /* Mask off disabled events. */
        gpe0_sts = ps->gpe0_sts & ps->gpe0_en;
 
        if (ps->pm1_sts & WAK_STS)
                elog_add_event_byte(ELOG_TYPE_ACPI_WAKE,
                                    acpi_is_wakeup_s3() ? ACPI_S3 : ACPI_S5);
 
        if (ps->pm1_sts & PWRBTN_STS)
                elog_add_event_wake(ELOG_WAKE_SOURCE_PWRBTN, 0);
 
        if (ps->pm1_sts & RTC_STS)
                elog_add_event_wake(ELOG_WAKE_SOURCE_RTC, 0);
 
        if (gpe0_sts & PME_B0_EN)
                elog_add_event_wake(ELOG_WAKE_SOURCE_PME_INTERNAL, 0);
 
        if (gpe0_sts & pcie_wake_mask)
                elog_add_event_wake(ELOG_WAKE_SOURCE_PCIE, 0);
 
        gpio_mask = SUS_GPIO_STS0;
        i = 0;
        while (gpio_mask) {
                if (gpio_mask & gpe0_sts)
                        elog_add_event_wake(ELOG_WAKE_SOURCE_GPE, i);
                gpio_mask <<= 1;
                i++;
        }
}
 
void southcluster_log_state(void)
{
        const struct chipset_power_state *ps;
 
        if (acpi_pm_state_for_elog(&ps) < 0)
                return;
 
        log_power_and_resets(ps);
        log_wake_events(ps);
}