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UPSTREAM: soc/intel/skylake: Add detailed information about PME wake sources

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Add more fine-grained details about what device caused the PME wake
event. This requires checking the PME status bit (bit 15) in PCI PM
control and status register for the PCI device.

BUG=b:37088992
TEST=Verifed that XHCI wake source was identified correctly:
135 | 2017-05-25 15:28:17 | ACPI Enter | S3
136 | 2017-05-25 15:28:26 | ACPI Wake | S3
137 | 2017-05-25 15:28:26 | Wake Source | PME - XHCI | 0

Change-Id: Ieef07a972d2a610284df082109a5bda59ab10dba
Signed-off-by: Patrick Georgi <pgeorgi@google.com>
Original-Commit-Id: ef8bb9136e
Original-Change-Id: I6fc6284cd04db311f1f86b8a86d0bb708392e5d5
Original-Signed-off-by: Furquan Shaikh <furquan@chromium.org>
Original-Reviewed-on: https://review.coreboot.org/19925
Original-Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Original-Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-on: https://chromium-review.googlesource.com/517932
Commit-Ready: Patrick Georgi <pgeorgi@chromium.org>
Tested-by: Patrick Georgi <pgeorgi@chromium.org>
Reviewed-by: Patrick Georgi <pgeorgi@chromium.org>
This commit is contained in:
Furquan Shaikh 2017-05-25 00:16:15 -07:00 • committed by chrome-bot
parent a4b1a63d9f
commit b882624119
1 changed files with 62 additions and 1 deletions
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63
src/soc/intel/skylake/elog.c
View file

@ -17,8 +17,10 @@
#include <bootstate.h>
#include <cbmem.h>
#include <console/console.h>
#include <device/pci_ops.h>
#include <stdint.h>
#include <elog.h>
#include <soc/pci_devs.h>
#include <soc/pm.h>
#include <soc/smbus.h>
@ -34,6 +36,65 @@ static void pch_log_gpio_gpe(u32 gpe0_sts, u32 gpe0_en, int start)
}
}
struct pme_status_info {
int devfn;
uint8_t reg_offset;
uint32_t elog_event;
};
#define PME_STS_BIT (1 << 15)
static void pch_log_pme_internal_wake_source(void)
{
size_t i;
device_t dev;
uint16_t val;
bool dev_found = false;
static const struct pme_status_info pme_status_info[] = {
{ PCH_DEVFN_HDA, 0x54, ELOG_WAKE_SOURCE_PME_HDA },
{ PCH_DEVFN_GBE, 0xcc, ELOG_WAKE_SOURCE_PME_GBE },
{ PCH_DEVFN_EMMC, 0x84, ELOG_WAKE_SOURCE_PME_EMMC },
{ PCH_DEVFN_SDCARD, 0x84, ELOG_WAKE_SOURCE_PME_SDCARD },
{ PCH_DEVFN_PCIE1, 0xa4, ELOG_WAKE_SOURCE_PME_PCIE1 },
{ PCH_DEVFN_PCIE2, 0xa4, ELOG_WAKE_SOURCE_PME_PCIE2 },
{ PCH_DEVFN_PCIE3, 0xa4, ELOG_WAKE_SOURCE_PME_PCIE3 },
{ PCH_DEVFN_PCIE4, 0xa4, ELOG_WAKE_SOURCE_PME_PCIE4 },
{ PCH_DEVFN_PCIE5, 0xa4, ELOG_WAKE_SOURCE_PME_PCIE5 },
{ PCH_DEVFN_PCIE6, 0xa4, ELOG_WAKE_SOURCE_PME_PCIE6 },
{ PCH_DEVFN_PCIE7, 0xa4, ELOG_WAKE_SOURCE_PME_PCIE7 },
{ PCH_DEVFN_PCIE8, 0xa4, ELOG_WAKE_SOURCE_PME_PCIE8 },
{ PCH_DEVFN_PCIE9, 0xa4, ELOG_WAKE_SOURCE_PME_PCIE9 },
{ PCH_DEVFN_PCIE10, 0xa4, ELOG_WAKE_SOURCE_PME_PCIE10 },
{ PCH_DEVFN_PCIE11, 0xa4, ELOG_WAKE_SOURCE_PME_PCIE11 },
{ PCH_DEVFN_PCIE12, 0xa4, ELOG_WAKE_SOURCE_PME_PCIE12 },
{ PCH_DEVFN_SATA, 0x74, ELOG_WAKE_SOURCE_PME_SATA },
{ PCH_DEVFN_CSE, 0x54, ELOG_WAKE_SOURCE_PME_CSE },
{ PCH_DEVFN_CSE_2, 0x54, ELOG_WAKE_SOURCE_PME_CSE2 },
{ PCH_DEVFN_CSE_3, 0x54, ELOG_WAKE_SOURCE_PME_CSE3 },
{ PCH_DEVFN_XHCI, 0x74, ELOG_WAKE_SOURCE_PME_XHCI },
{ PCH_DEVFN_USBOTG, 0x84, ELOG_WAKE_SOURCE_PME_XDCI },
};
for (i = 0; i < ARRAY_SIZE(pme_status_info); i++) {
dev = dev_find_slot(0, pme_status_info[i].devfn);
if (!dev)
continue;
val = pci_read_config16(dev, pme_status_info[i].reg_offset);
if ((val == 0xFFFF) || !(val & PME_STS_BIT))
continue;
elog_add_event_wake(pme_status_info[i].elog_event, 0);
dev_found = true;
}
if (!dev_found)
elog_add_event_wake(ELOG_WAKE_SOURCE_PME_INTERNAL, 0);
}
static void pch_log_wake_source(struct chipset_power_state *ps)
{
/* Power Button */
@ -54,7 +115,7 @@ static void pch_log_wake_source(struct chipset_power_state *ps)
/* Internal PME (TODO: determine wake device) */
if (ps->gpe0_sts[GPE_STD] & PME_B0_STS)
elog_add_event_wake(ELOG_WAKE_SOURCE_PME_INTERNAL, 0);
pch_log_pme_internal_wake_source();
/* SMBUS Wake */
if (ps->gpe0_sts[GPE_STD] & SMB_WAK_STS)