| /* |
| * This file is part of the coreboot project. |
| * |
| * Copyright (C) 2014 Google Inc. |
| * Copyright (C) 2015 Intel Corporation. |
| * |
| * 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 <bootstate.h> |
| #include <cbmem.h> |
| #include <console/console.h> |
| #include <device/pci_ops.h> |
| #include <stdint.h> |
| #include <elog.h> |
| #include <intelblocks/pmclib.h> |
| #include <soc/pci_devs.h> |
| #include <soc/pm.h> |
| #include <soc/smbus.h> |
| |
| 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_GPIO, i + start); |
| } |
| } |
| |
| #define XHCI_USB2_PORT_STATUS_REG 0x480 |
| #define XHCI_USB3_PORT_STATUS_REG 0x540 |
| #define XHCI_USB2_PORT_NUM 10 |
| #define XHCI_USB3_PORT_NUM 6 |
| /* Wake on disconnect enable */ |
| #define XHCI_STATUS_WDE (1 << 26) |
| /* Wake on connect enable */ |
| #define XHCI_STATUS_WCE (1 << 25) |
| /* Port link status change */ |
| #define XHCI_STATUS_PLC (1 << 22) |
| /* Connect status change */ |
| #define XHCI_STATUS_CSC (1 << 17) |
| /* Port link status */ |
| #define XHCI_STATUS_PLS_SHIFT (5) |
| #define XHCI_STATUS_PLS_MASK (0xF << XHCI_STATUS_PLS_SHIFT) |
| #define XHCI_STATUS_PLS_RESUME (15 << XHCI_STATUS_PLS_SHIFT) |
| |
| static bool pch_xhci_csc_set(uint32_t port_status) |
| { |
| return !!(port_status & XHCI_STATUS_CSC); |
| } |
| |
| static bool pch_xhci_wake_capable(uint32_t port_status) |
| { |
| return !!((port_status & XHCI_STATUS_WCE) | |
| (port_status & XHCI_STATUS_WDE)); |
| } |
| |
| static bool pch_xhci_plc_set(uint32_t port_status) |
| { |
| return !!(port_status & XHCI_STATUS_PLC); |
| } |
| |
| static bool pch_xhci_resume(uint32_t port_status) |
| { |
| return (port_status & XHCI_STATUS_PLS_MASK) == XHCI_STATUS_PLS_RESUME; |
| } |
| |
| /* |
| * Check if a particular USB port caused wake by: |
| * 1. Change in connect/disconnect status (if enabled) |
| * 2. USB device activity |
| * |
| * Params: |
| * base : MMIO address of first port. |
| * num : Number of ports. |
| * event : Event that needs to be added in case wake source is found. |
| * |
| * Return value: |
| * true : Wake source was found. |
| * false : Wake source was not found. |
| */ |
| static bool pch_xhci_port_wake_check(uintptr_t base, uint8_t num, |
| uint32_t event) |
| { |
| uint8_t i; |
| uint32_t port_status; |
| bool found = false; |
| |
| for (i = 0; i < num; i++, base += 0x10) { |
| /* Read port status and control register for the port. */ |
| port_status = read32((void *)base); |
| |
| /* Ensure that the status is not all 1s. */ |
| if (port_status == 0xffffffff) |
| continue; |
| |
| /* |
| * Check if CSC bit is set and port is capable of wake on |
| * connect/disconnect to identify if the port caused wake |
| * event for usb attach/detach. |
| */ |
| if (pch_xhci_csc_set(port_status) && |
| pch_xhci_wake_capable(port_status)) { |
| elog_add_event_wake(event, i + 1); |
| found = true; |
| continue; |
| } |
| |
| /* |
| * Check if PLC is set and PLS indicates resume to identify if |
| * the port caused wake event for usb activity. |
| */ |
| if (pch_xhci_plc_set(port_status) && |
| pch_xhci_resume(port_status)) { |
| elog_add_event_wake(event, i + 1); |
| found = true; |
| } |
| } |
| return found; |
| } |
| |
| /* |
| * Update elog event and instance depending upon the USB2 port that caused |
| * the wake event. |
| * |
| * Return value: |
| * true = Indicates that USB2 wake event was found. |
| * false = Indicates that USB2 wake event was not found. |
| */ |
| static inline bool pch_xhci_usb2_update_wake_event(uintptr_t mmio_base) |
| { |
| return pch_xhci_port_wake_check(mmio_base + XHCI_USB2_PORT_STATUS_REG, |
| XHCI_USB2_PORT_NUM, |
| ELOG_WAKE_SOURCE_PME_XHCI_USB_2); |
| } |
| |
| /* |
| * Update elog event and instance depending upon the USB3 port that caused |
| * the wake event. |
| * |
| * Return value: |
| * true = Indicates that USB3 wake event was found. |
| * false = Indicates that USB3 wake event was not found. |
| */ |
| static inline bool pch_xhci_usb3_update_wake_event(uintptr_t mmio_base) |
| { |
| return pch_xhci_port_wake_check(mmio_base + XHCI_USB3_PORT_STATUS_REG, |
| XHCI_USB3_PORT_NUM, |
| ELOG_WAKE_SOURCE_PME_XHCI_USB_3); |
| } |
| |
| #ifdef __SIMPLE_DEVICE__ |
| static bool pch_xhci_update_wake_event(pci_devfn_t dev) |
| #else |
| static bool pch_xhci_update_wake_event(struct device *dev) |
| #endif |
| { |
| uintptr_t mmio_base; |
| bool event_found = false; |
| mmio_base = ALIGN_DOWN(pci_read_config32(dev, PCI_BASE_ADDRESS_0), 16); |
| |
| if (pch_xhci_usb2_update_wake_event(mmio_base)) |
| event_found = true; |
| |
| if (pch_xhci_usb3_update_wake_event(mmio_base)) |
| event_found = true; |
| |
| return event_found; |
| } |
| |
| struct pme_status_info { |
| #ifdef __SIMPLE_DEVICE__ |
| pci_devfn_t dev; |
| #else |
| struct device *dev; |
| #endif |
| uint8_t reg_offset; |
| uint32_t elog_event; |
| }; |
| |
| #define PME_STS_BIT (1 << 15) |
| |
| #ifdef __SIMPLE_DEVICE__ |
| static void pch_log_add_elog_event(const struct pme_status_info *info, |
| pci_devfn_t dev) |
| #else |
| static void pch_log_add_elog_event(const struct pme_status_info *info, |
| struct device *dev) |
| #endif |
| { |
| /* |
| * If wake source is XHCI, check for detailed wake source events on |
| * USB2/3 ports. |
| */ |
| if ((info->dev == PCH_DEV_XHCI) && pch_xhci_update_wake_event(dev)) |
| return; |
| |
| elog_add_event_wake(info->elog_event, 0); |
| } |
| |
| static void pch_log_pme_internal_wake_source(void) |
| { |
| size_t i; |
| #ifdef __SIMPLE_DEVICE__ |
| pci_devfn_t dev; |
| #else |
| struct device *dev; |
| #endif |
| uint16_t val; |
| bool dev_found = false; |
| |
| struct pme_status_info pme_status_info[] = { |
| { PCH_DEV_HDA, 0x54, ELOG_WAKE_SOURCE_PME_HDA }, |
| { PCH_DEV_GBE, 0xcc, ELOG_WAKE_SOURCE_PME_GBE }, |
| { PCH_DEV_SATA, 0x74, ELOG_WAKE_SOURCE_PME_SATA }, |
| { PCH_DEV_CSE, 0x54, ELOG_WAKE_SOURCE_PME_CSE }, |
| { PCH_DEV_XHCI, 0x74, ELOG_WAKE_SOURCE_PME_XHCI }, |
| { PCH_DEV_USBOTG, 0x84, ELOG_WAKE_SOURCE_PME_XDCI }, |
| }; |
| |
| for (i = 0; i < ARRAY_SIZE(pme_status_info); i++) { |
| dev = pme_status_info[i].dev; |
| if (!dev) |
| continue; |
| |
| val = pci_read_config16(dev, pme_status_info[i].reg_offset); |
| |
| if ((val == 0xFFFF) || !(val & PME_STS_BIT)) |
| continue; |
| |
| pch_log_add_elog_event(&pme_status_info[i], dev); |
| dev_found = true; |
| } |
| |
| /* |
| * If device is still not found, but the wake source is internal PME, |
| * try probing XHCI ports to see if any of the USB2/3 ports indicate |
| * that it was the wake source. This path would be taken in case of GSMI |
| * logging with S0ix where the pci_pm_resume_noirq runs and clears the |
| * PME_STS_BIT in controller register. |
| */ |
| if (!dev_found) |
| dev_found = pch_xhci_update_wake_event(PCH_DEV_XHCI); |
| |
| if (!dev_found) |
| elog_add_event_wake(ELOG_WAKE_SOURCE_PME_INTERNAL, 0); |
| } |
| |
| #define RP_PME_STS_BIT (1 << 16) |
| static void pch_log_rp_wake_source(void) |
| { |
| size_t i; |
| #ifdef __SIMPLE_DEVICE__ |
| pci_devfn_t dev; |
| #else |
| struct device *dev; |
| #endif |
| uint32_t val; |
| |
| struct pme_status_info pme_status_info[] = { |
| { PCH_DEV_PCIE1, 0x60, ELOG_WAKE_SOURCE_PME_PCIE1 }, |
| { PCH_DEV_PCIE2, 0x60, ELOG_WAKE_SOURCE_PME_PCIE2 }, |
| { PCH_DEV_PCIE3, 0x60, ELOG_WAKE_SOURCE_PME_PCIE3 }, |
| { PCH_DEV_PCIE4, 0x60, ELOG_WAKE_SOURCE_PME_PCIE4 }, |
| { PCH_DEV_PCIE5, 0x60, ELOG_WAKE_SOURCE_PME_PCIE5 }, |
| { PCH_DEV_PCIE6, 0x60, ELOG_WAKE_SOURCE_PME_PCIE6 }, |
| { PCH_DEV_PCIE7, 0x60, ELOG_WAKE_SOURCE_PME_PCIE7 }, |
| { PCH_DEV_PCIE8, 0x60, ELOG_WAKE_SOURCE_PME_PCIE8 }, |
| { PCH_DEV_PCIE9, 0x60, ELOG_WAKE_SOURCE_PME_PCIE9 }, |
| { PCH_DEV_PCIE10, 0x60, ELOG_WAKE_SOURCE_PME_PCIE10 }, |
| { PCH_DEV_PCIE11, 0x60, ELOG_WAKE_SOURCE_PME_PCIE11 }, |
| { PCH_DEV_PCIE12, 0x60, ELOG_WAKE_SOURCE_PME_PCIE12 }, |
| }; |
| |
| for (i = 0; i < ARRAY_SIZE(pme_status_info); i++) { |
| dev = pme_status_info[i].dev; |
| |
| if (!dev) |
| continue; |
| |
| val = pci_read_config32(dev, pme_status_info[i].reg_offset); |
| |
| if ((val == 0xFFFFFFFF) || !(val & RP_PME_STS_BIT)) |
| continue; |
| |
| /* |
| * Linux kernel uses PME STS bit information. So do not clear |
| * this bit. |
| */ |
| pch_log_add_elog_event(&pme_status_info[i], dev); |
| } |
| } |
| |
| static void pch_log_wake_source(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) |
| elog_add_event_wake(ELOG_WAKE_SOURCE_PCIE, 0); |
| |
| /* |
| * PCIE Root Port . |
| * This should be done when PCIEXPWAK_STS bit is set. |
| * In SPT, this bit isn't getting set due to known bug. |
| * So scan all PCIe RP for PME status bit. |
| */ |
| 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 (TODO: determine wake device) */ |
| 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(struct chipset_power_state *ps) |
| { |
| bool deep_sx; |
| |
| /* |
| * Platform entered deep Sx if: |
| * 1. Prev sleep state was Sx and deep_sx_enabled() is true |
| * 2. SUS well power was lost |
| */ |
| deep_sx = ((((ps->prev_sleep_state == ACPI_S3) && deep_s3_enabled()) || |
| ((ps->prev_sleep_state == ACPI_S5) && deep_s5_enabled())) && |
| (ps->gen_pmcon_b & SUS_PWR_FLR)); |
| |
| /* Thermal Trip */ |
| if (ps->gblrst_cause[0] & GBLRST_CAUSE0_THERMTRIP) |
| elog_add_event(ELOG_TYPE_THERM_TRIP); |
| |
| /* PWR_FLR Power Failure */ |
| if (ps->gen_pmcon_b & PWR_FLR) |
| elog_add_event(ELOG_TYPE_POWER_FAIL); |
| |
| /* SUS Well Power Failure */ |
| if (ps->gen_pmcon_b & SUS_PWR_FLR) { |
| /* Do not log SUS_PWR_FLR if waking from deep Sx */ |
| if (!deep_sx) |
| elog_add_event(ELOG_TYPE_SUS_POWER_FAIL); |
| } |
| |
| /* TCO Timeout */ |
| if (ps->prev_sleep_state != ACPI_S3 && |
| ps->tco2_sts & TCO2_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_b & HOST_RST_STS) |
| elog_add_event(ELOG_TYPE_SYSTEM_RESET); |
| |
| /* ACPI Wake Event */ |
| if (ps->prev_sleep_state != ACPI_S0) { |
| if (deep_sx) |
| elog_add_event_byte(ELOG_TYPE_ACPI_DEEP_WAKE, |
| ps->prev_sleep_state); |
| else |
| elog_add_event_byte(ELOG_TYPE_ACPI_WAKE, |
| ps->prev_sleep_state); |
| } |
| } |
| |
| static void pch_log_state(void *unused) |
| { |
| struct chipset_power_state *ps = cbmem_find(CBMEM_ID_POWER_STATE); |
| |
| if (ps == NULL) { |
| printk(BIOS_ERR, |
| "Not logging power state information. Power state not found in cbmem.\n"); |
| return; |
| } |
| |
| /* Power and Reset */ |
| pch_log_power_and_resets(ps); |
| |
| /* Wake Sources */ |
| if (ps->prev_sleep_state > 0) |
| 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); |
| } |