diff options
Diffstat (limited to 'drivers/platform/x86/amd/pmc-quirks.c')
| -rw-r--r-- | drivers/platform/x86/amd/pmc-quirks.c | 172 |
1 files changed, 0 insertions, 172 deletions
diff --git a/drivers/platform/x86/amd/pmc-quirks.c b/drivers/platform/x86/amd/pmc-quirks.c deleted file mode 100644 index ad702463a65d..000000000000 --- a/drivers/platform/x86/amd/pmc-quirks.c +++ /dev/null @@ -1,172 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0-or-later -/* - * AMD SoC Power Management Controller Driver Quirks - * - * Copyright (c) 2023, Advanced Micro Devices, Inc. - * All Rights Reserved. - * - * Author: Mario Limonciello <mario.limonciello@amd.com> - */ - -#include <linux/dmi.h> -#include <linux/io.h> -#include <linux/ioport.h> - -#include "pmc.h" - -struct quirk_entry { - u32 s2idle_bug_mmio; -}; - -static struct quirk_entry quirk_s2idle_bug = { - .s2idle_bug_mmio = 0xfed80380, -}; - -static const struct dmi_system_id fwbug_list[] = { - { - .ident = "L14 Gen2 AMD", - .driver_data = &quirk_s2idle_bug, - .matches = { - DMI_MATCH(DMI_BOARD_VENDOR, "LENOVO"), - DMI_MATCH(DMI_PRODUCT_NAME, "20X5"), - } - }, - { - .ident = "T14s Gen2 AMD", - .driver_data = &quirk_s2idle_bug, - .matches = { - DMI_MATCH(DMI_BOARD_VENDOR, "LENOVO"), - DMI_MATCH(DMI_PRODUCT_NAME, "20XF"), - } - }, - { - .ident = "X13 Gen2 AMD", - .driver_data = &quirk_s2idle_bug, - .matches = { - DMI_MATCH(DMI_BOARD_VENDOR, "LENOVO"), - DMI_MATCH(DMI_PRODUCT_NAME, "20XH"), - } - }, - { - .ident = "T14 Gen2 AMD", - .driver_data = &quirk_s2idle_bug, - .matches = { - DMI_MATCH(DMI_BOARD_VENDOR, "LENOVO"), - DMI_MATCH(DMI_PRODUCT_NAME, "20XK"), - } - }, - { - .ident = "T14 Gen1 AMD", - .driver_data = &quirk_s2idle_bug, - .matches = { - DMI_MATCH(DMI_BOARD_VENDOR, "LENOVO"), - DMI_MATCH(DMI_PRODUCT_NAME, "20UD"), - } - }, - { - .ident = "T14 Gen1 AMD", - .driver_data = &quirk_s2idle_bug, - .matches = { - DMI_MATCH(DMI_BOARD_VENDOR, "LENOVO"), - DMI_MATCH(DMI_PRODUCT_NAME, "20UE"), - } - }, - { - .ident = "T14s Gen1 AMD", - .driver_data = &quirk_s2idle_bug, - .matches = { - DMI_MATCH(DMI_BOARD_VENDOR, "LENOVO"), - DMI_MATCH(DMI_PRODUCT_NAME, "20UH"), - } - }, - { - .ident = "T14s Gen1 AMD", - .driver_data = &quirk_s2idle_bug, - .matches = { - DMI_MATCH(DMI_BOARD_VENDOR, "LENOVO"), - DMI_MATCH(DMI_PRODUCT_NAME, "20UJ"), - } - }, - { - .ident = "P14s Gen1 AMD", - .driver_data = &quirk_s2idle_bug, - .matches = { - DMI_MATCH(DMI_BOARD_VENDOR, "LENOVO"), - DMI_MATCH(DMI_PRODUCT_NAME, "20Y1"), - } - }, - { - .ident = "P14s Gen2 AMD", - .driver_data = &quirk_s2idle_bug, - .matches = { - DMI_MATCH(DMI_BOARD_VENDOR, "LENOVO"), - DMI_MATCH(DMI_PRODUCT_NAME, "21A0"), - } - }, - { - .ident = "P14s Gen2 AMD", - .driver_data = &quirk_s2idle_bug, - .matches = { - DMI_MATCH(DMI_BOARD_VENDOR, "LENOVO"), - DMI_MATCH(DMI_PRODUCT_NAME, "21A1"), - } - }, - /* https://gitlab.freedesktop.org/drm/amd/-/issues/2684 */ - { - .ident = "HP Laptop 15s-eq2xxx", - .driver_data = &quirk_s2idle_bug, - .matches = { - DMI_MATCH(DMI_SYS_VENDOR, "HP"), - DMI_MATCH(DMI_PRODUCT_NAME, "HP Laptop 15s-eq2xxx"), - } - }, - {} -}; - -/* - * Laptops that run a SMI handler during the D3->D0 transition that occurs - * specifically when exiting suspend to idle which can cause - * large delays during resume when the IOMMU translation layer is enabled (the default - * behavior) for NVME devices: - * - * To avoid this firmware problem, skip the SMI handler on these machines before the - * D0 transition occurs. - */ -static void amd_pmc_skip_nvme_smi_handler(u32 s2idle_bug_mmio) -{ - void __iomem *addr; - u8 val; - - if (!request_mem_region_muxed(s2idle_bug_mmio, 1, "amd_pmc_pm80")) - return; - - addr = ioremap(s2idle_bug_mmio, 1); - if (!addr) - goto cleanup_resource; - - val = ioread8(addr); - iowrite8(val & ~BIT(0), addr); - - iounmap(addr); -cleanup_resource: - release_mem_region(s2idle_bug_mmio, 1); -} - -void amd_pmc_process_restore_quirks(struct amd_pmc_dev *dev) -{ - if (dev->quirks && dev->quirks->s2idle_bug_mmio) - amd_pmc_skip_nvme_smi_handler(dev->quirks->s2idle_bug_mmio); -} - -void amd_pmc_quirks_init(struct amd_pmc_dev *dev) -{ - const struct dmi_system_id *dmi_id; - - dmi_id = dmi_first_match(fwbug_list); - if (!dmi_id) - return; - dev->quirks = dmi_id->driver_data; - if (dev->quirks->s2idle_bug_mmio) - pr_info("Using s2idle quirk to avoid %s platform firmware bug\n", - dmi_id->ident); -} |