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/* SPDX-License-Identifier: GPL-2.0-only */
#include <bootstate.h>
#include <console/console.h>
#include <device/pci_ops.h>
#include <elog.h>
#include <intelblocks/pmclib.h>
#include <intelblocks/xhci.h>
#include <soc/pci_devs.h>
#include <soc/pm.h>
#include <stdint.h>
#include <types.h>
struct pme_map {
pci_devfn_t devfn;
unsigned int wake_source;
};
static void pch_log_gpio_gpe(u32 gpe0_sts, u32 gpe0_en, int start)
{
int i;
gpe0_sts &= gpe0_en;
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_rp_wake_source(void)
{
size_t i;
const struct pme_map pme_map[] = {
{ PCH_DEVFN_PCIE1, ELOG_WAKE_SOURCE_PME_PCIE1 },
{ PCH_DEVFN_PCIE2, ELOG_WAKE_SOURCE_PME_PCIE2 },
{ PCH_DEVFN_PCIE3, ELOG_WAKE_SOURCE_PME_PCIE3 },
{ PCH_DEVFN_PCIE4, ELOG_WAKE_SOURCE_PME_PCIE4 },
{ PCH_DEVFN_PCIE5, ELOG_WAKE_SOURCE_PME_PCIE5 },
{ PCH_DEVFN_PCIE6, ELOG_WAKE_SOURCE_PME_PCIE6 },
{ PCH_DEVFN_PCIE7, ELOG_WAKE_SOURCE_PME_PCIE7 },
{ PCH_DEVFN_PCIE8, ELOG_WAKE_SOURCE_PME_PCIE8 },
{ PCH_DEVFN_PCIE9, ELOG_WAKE_SOURCE_PME_PCIE9 },
{ PCH_DEVFN_PCIE10, ELOG_WAKE_SOURCE_PME_PCIE10 },
{ PCH_DEVFN_PCIE11, ELOG_WAKE_SOURCE_PME_PCIE11 },
{ PCH_DEVFN_PCIE12, ELOG_WAKE_SOURCE_PME_PCIE12 },
};
for (i = 0; i < MIN(CONFIG_MAX_ROOT_PORTS, ARRAY_SIZE(pme_map)); ++i) {
const struct device *dev = pcidev_path_on_root(pme_map[i].devfn);
if (!dev)
continue;
if (pci_dev_is_wake_source(dev))
elog_add_event_wake(pme_map[i].wake_source, 0);
}
}
static void pch_log_pme_internal_wake_source(void)
{
const struct pme_map ipme_map[] = {
{ PCH_DEVFN_HDA, ELOG_WAKE_SOURCE_PME_HDA },
{ PCH_DEVFN_GBE, ELOG_WAKE_SOURCE_PME_GBE },
{ PCH_DEVFN_SATA, ELOG_WAKE_SOURCE_PME_SATA },
{ PCH_DEVFN_CSE, ELOG_WAKE_SOURCE_PME_CSE },
{ PCH_DEVFN_USBOTG, ELOG_WAKE_SOURCE_PME_XDCI },
{ PCH_DEVFN_CNVI_WIFI, ELOG_WAKE_SOURCE_PME_WIFI },
{ SA_DEVFN_TCSS_XDCI, ELOG_WAKE_SOURCE_PME_TCSS_XDCI },
};
const struct xhci_wake_info xhci_wake_info[] = {
{ PCH_DEVFN_XHCI, ELOG_WAKE_SOURCE_PME_XHCI },
{ SA_DEVFN_TCSS_XHCI, ELOG_WAKE_SOURCE_PME_TCSS_XHCI },
};
bool dev_found = false;
size_t i;
for (i = 0; i < ARRAY_SIZE(ipme_map); i++) {
const struct device *dev =
pcidev_path_on_root(ipme_map[i].devfn);
if (!dev)
continue;
if (pci_dev_is_wake_source(dev)) {
elog_add_event_wake(ipme_map[i].wake_source, 0);
dev_found = true;
}
}
/* Check Thunderbolt ports */
for (i = 0; i < NUM_TBT_FUNCTIONS; i++) {
const struct device *dev = pcidev_path_on_root(SA_DEVFN_TBT(i));
if (!dev)
continue;
if (pci_dev_is_wake_source(dev)) {
elog_add_event_wake(ELOG_WAKE_SOURCE_PME_TBT, i);
dev_found = true;
}
}
/* Check DMA devices */
for (i = 0; i < NUM_TCSS_DMA_FUNCTIONS; i++) {
const struct device *dev = pcidev_path_on_root(SA_DEVFN_TCSS_DMA(i));
if (!dev)
continue;
if (pci_dev_is_wake_source(dev)) {
elog_add_event_wake(ELOG_WAKE_SOURCE_PME_TCSS_DMA, i);
dev_found = true;
}
}
/*
* Check the XHCI controllers' USB2 & USB3 ports for wake events. There
* are cases (GSMI logging for S0ix clears PME_STS_BIT) where the XHCI
* controller's PME_STS_BIT may have already been cleared, so the host
* controller wake wouldn't get logged here; therefore, the host
* controller wake event is logged before its corresponding port wake
* event is logged.
*/
dev_found |= xhci_update_wake_event(xhci_wake_info,
ARRAY_SIZE(xhci_wake_info));
if (!dev_found)
elog_add_event_wake(ELOG_WAKE_SOURCE_PME_INTERNAL, 0);
}
static void pch_log_wake_source(const struct chipset_power_state *ps)
{
/* Power Button */
if (ps->pm1_sts & PWRBTN_STS)
elog_add_event_wake(ELOG_WAKE_SOURCE_PWRBTN, 0);
/* RTC */
if (ps->pm1_sts & RTC_STS)
elog_add_event_wake(ELOG_WAKE_SOURCE_RTC, 0);
/* PCI Express (TODO: determine wake device) */
if (ps->pm1_sts & PCIEXPWAK_STS)
pch_log_rp_wake_source();
/* PME (TODO: determine wake device) */
if (ps->gpe0_sts[GPE_STD] & PME_STS)
elog_add_event_wake(ELOG_WAKE_SOURCE_PME, 0);
/* Internal PME */
if (ps->gpe0_sts[GPE_STD] & PME_B0_STS)
pch_log_pme_internal_wake_source();
/* SMBUS Wake */
if (ps->gpe0_sts[GPE_STD] & SMB_WAK_STS)
elog_add_event_wake(ELOG_WAKE_SOURCE_SMBUS, 0);
/* Log GPIO events in set 1-3 */
pch_log_gpio_gpe(ps->gpe0_sts[GPE_31_0], ps->gpe0_en[GPE_31_0], 0);
pch_log_gpio_gpe(ps->gpe0_sts[GPE_63_32], ps->gpe0_en[GPE_63_32], 32);
pch_log_gpio_gpe(ps->gpe0_sts[GPE_95_64], ps->gpe0_en[GPE_95_64], 64);
/* Treat the STD as an extension of GPIO to obtain visibility. */
pch_log_gpio_gpe(ps->gpe0_sts[GPE_STD], ps->gpe0_en[GPE_STD], 96);
}
static void pch_log_power_and_resets(const struct chipset_power_state *ps)
{
/* Thermal Trip */
if (ps->gblrst_cause[0] & GBLRST_CAUSE0_THERMTRIP)
elog_add_event(ELOG_TYPE_THERM_TRIP);
/* CSME-Initiated Host Reset with power down */
if (ps->hpr_cause0 & HPR_CAUSE0_MI_HRPD)
elog_add_event(ELOG_TYPE_MI_HRPD);
/* CSME-Initiated Host Reset with power cycle */
if (ps->hpr_cause0 & HPR_CAUSE0_MI_HRPC)
elog_add_event(ELOG_TYPE_MI_HRPC);
/* CSME-Initiated Host Reset without power cycle */
if (ps->hpr_cause0 & HPR_CAUSE0_MI_HR)
elog_add_event(ELOG_TYPE_MI_HR);
/* PWR_FLR Power Failure */
if (ps->gen_pmcon_a & PWR_FLR)
elog_add_event(ELOG_TYPE_POWER_FAIL);
/* SUS Well Power Failure */
if (ps->gen_pmcon_a & SUS_PWR_FLR)
elog_add_event(ELOG_TYPE_SUS_POWER_FAIL);
/* TCO Timeout */
if (ps->prev_sleep_state != ACPI_S3 &&
ps->tco2_sts & TCO_STS_SECOND_TO)
elog_add_event(ELOG_TYPE_TCO_RESET);
/* Power Button Override */
if (ps->pm1_sts & PRBTNOR_STS)
elog_add_event(ELOG_TYPE_POWER_BUTTON_OVERRIDE);
/* RTC reset */
if (ps->gen_pmcon_b & RTC_BATTERY_DEAD)
elog_add_event(ELOG_TYPE_RTC_RESET);
/* Host Reset Status */
if (ps->gen_pmcon_a & HOST_RST_STS)
elog_add_event(ELOG_TYPE_SYSTEM_RESET);
/* ACPI Wake Event */
if (ps->prev_sleep_state != ACPI_S0)
elog_add_event_byte(ELOG_TYPE_ACPI_WAKE, ps->prev_sleep_state);
}
static void pch_log_state(void *unused)
{
struct chipset_power_state *ps = pmc_get_power_state();
if (!ps) {
printk(BIOS_ERR, "chipset_power_state not found!\n");
return;
}
/* Power and Reset */
pch_log_power_and_resets(ps);
/* Wake Sources */
if (ps->prev_sleep_state > ACPI_S0)
pch_log_wake_source(ps);
}
BOOT_STATE_INIT_ENTRY(BS_DEV_INIT, BS_ON_EXIT, pch_log_state, NULL);
void elog_gsmi_cb_platform_log_wake_source(void)
{
struct chipset_power_state ps;
pmc_fill_pm_reg_info(&ps);
pch_log_wake_source(&ps);
}
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