1 // SPDX-License-Identifier: GPL-2.0-only 2 /* 3 * X86 ACPI Utility Functions 4 * 5 * Copyright (C) 2017 Hans de Goede <hdegoede@redhat.com> 6 * 7 * Based on various non upstream patches to support the CHT Whiskey Cove PMIC: 8 * Copyright (C) 2013-2015 Intel Corporation. All rights reserved. 9 */ 10 11 #include <linux/acpi.h> 12 #include <linux/dmi.h> 13 #include <asm/cpu_device_id.h> 14 #include <asm/intel-family.h> 15 #include "../internal.h" 16 17 /* 18 * Some ACPI devices are hidden (status == 0x0) in recent BIOS-es because 19 * some recent Windows drivers bind to one device but poke at multiple 20 * devices at the same time, so the others get hidden. 21 * 22 * Some BIOS-es (temporarily) hide specific APCI devices to work around Windows 23 * driver bugs. We use DMI matching to match known cases of this. 24 * 25 * Likewise sometimes some not-actually present devices are sometimes 26 * reported as present, which may cause issues. 27 * 28 * We work around this by using the below quirk list to override the status 29 * reported by the _STA method with a fixed value (ACPI_STA_DEFAULT or 0). 30 * Note this MUST only be done for devices where this is safe. 31 * 32 * This status overriding is limited to specific CPU (SoC) models both to 33 * avoid potentially causing trouble on other models and because some HIDs 34 * are re-used on different SoCs for completely different devices. 35 */ 36 struct override_status_id { 37 struct acpi_device_id hid[2]; 38 struct x86_cpu_id cpu_ids[2]; 39 struct dmi_system_id dmi_ids[2]; /* Optional */ 40 const char *uid; 41 unsigned long long status; 42 }; 43 44 #define ENTRY(status, hid, uid, cpu_model, dmi...) { \ 45 { { hid, }, {} }, \ 46 { X86_MATCH_INTEL_FAM6_MODEL(cpu_model, NULL), {} }, \ 47 { { .matches = dmi }, {} }, \ 48 uid, \ 49 status, \ 50 } 51 52 #define PRESENT_ENTRY_HID(hid, uid, cpu_model, dmi...) \ 53 ENTRY(ACPI_STA_DEFAULT, hid, uid, cpu_model, dmi) 54 55 #define NOT_PRESENT_ENTRY_HID(hid, uid, cpu_model, dmi...) \ 56 ENTRY(0, hid, uid, cpu_model, dmi) 57 58 static const struct override_status_id override_status_ids[] = { 59 /* 60 * Bay / Cherry Trail PWM directly poked by GPU driver in win10, 61 * but Linux uses a separate PWM driver, harmless if not used. 62 */ 63 PRESENT_ENTRY_HID("80860F09", "1", ATOM_SILVERMONT, {}), 64 PRESENT_ENTRY_HID("80862288", "1", ATOM_AIRMONT, {}), 65 66 /* 67 * The INT0002 device is necessary to clear wakeup interrupt sources 68 * on Cherry Trail devices, without it we get nobody cared IRQ msgs. 69 */ 70 PRESENT_ENTRY_HID("INT0002", "1", ATOM_AIRMONT, {}), 71 /* 72 * On the Dell Venue 11 Pro 7130 and 7139, the DSDT hides 73 * the touchscreen ACPI device until a certain time 74 * after _SB.PCI0.GFX0.LCD.LCD1._ON gets called has passed 75 * *and* _STA has been called at least 3 times since. 76 */ 77 PRESENT_ENTRY_HID("SYNA7500", "1", HASWELL_L, { 78 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), 79 DMI_MATCH(DMI_PRODUCT_NAME, "Venue 11 Pro 7130"), 80 }), 81 PRESENT_ENTRY_HID("SYNA7500", "1", HASWELL_L, { 82 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), 83 DMI_MATCH(DMI_PRODUCT_NAME, "Venue 11 Pro 7139"), 84 }), 85 86 /* 87 * The GPD win BIOS dated 20170221 has disabled the accelerometer, the 88 * drivers sometimes cause crashes under Windows and this is how the 89 * manufacturer has solved this :| Note that the the DMI data is less 90 * generic then it seems, a board_vendor of "AMI Corporation" is quite 91 * rare and a board_name of "Default String" also is rare. 92 * 93 * Unfortunately the GPD pocket also uses these strings and its BIOS 94 * was copy-pasted from the GPD win, so it has a disabled KIOX000A 95 * node which we should not enable, thus we also check the BIOS date. 96 */ 97 PRESENT_ENTRY_HID("KIOX000A", "1", ATOM_AIRMONT, { 98 DMI_MATCH(DMI_BOARD_VENDOR, "AMI Corporation"), 99 DMI_MATCH(DMI_BOARD_NAME, "Default string"), 100 DMI_MATCH(DMI_PRODUCT_NAME, "Default string"), 101 DMI_MATCH(DMI_BIOS_DATE, "02/21/2017") 102 }), 103 PRESENT_ENTRY_HID("KIOX000A", "1", ATOM_AIRMONT, { 104 DMI_MATCH(DMI_BOARD_VENDOR, "AMI Corporation"), 105 DMI_MATCH(DMI_BOARD_NAME, "Default string"), 106 DMI_MATCH(DMI_PRODUCT_NAME, "Default string"), 107 DMI_MATCH(DMI_BIOS_DATE, "03/20/2017") 108 }), 109 PRESENT_ENTRY_HID("KIOX000A", "1", ATOM_AIRMONT, { 110 DMI_MATCH(DMI_BOARD_VENDOR, "AMI Corporation"), 111 DMI_MATCH(DMI_BOARD_NAME, "Default string"), 112 DMI_MATCH(DMI_PRODUCT_NAME, "Default string"), 113 DMI_MATCH(DMI_BIOS_DATE, "05/25/2017") 114 }), 115 }; 116 117 bool acpi_device_override_status(struct acpi_device *adev, unsigned long long *status) 118 { 119 bool ret = false; 120 unsigned int i; 121 122 for (i = 0; i < ARRAY_SIZE(override_status_ids); i++) { 123 if (acpi_match_device_ids(adev, override_status_ids[i].hid)) 124 continue; 125 126 if (!adev->pnp.unique_id || 127 strcmp(adev->pnp.unique_id, override_status_ids[i].uid)) 128 continue; 129 130 if (!x86_match_cpu(override_status_ids[i].cpu_ids)) 131 continue; 132 133 if (override_status_ids[i].dmi_ids[0].matches[0].slot && 134 !dmi_check_system(override_status_ids[i].dmi_ids)) 135 continue; 136 137 *status = override_status_ids[i].status; 138 ret = true; 139 break; 140 } 141 142 return ret; 143 } 144 145 /* 146 * AMD systems from Renoir and Lucienne *require* that the NVME controller 147 * is put into D3 over a Modern Standby / suspend-to-idle cycle. 148 * 149 * This is "typically" accomplished using the `StorageD3Enable` 150 * property in the _DSD that is checked via the `acpi_storage_d3` function 151 * but this property was introduced after many of these systems launched 152 * and most OEM systems don't have it in their BIOS. 153 * 154 * The Microsoft documentation for StorageD3Enable mentioned that Windows has 155 * a hardcoded allowlist for D3 support, which was used for these platforms. 156 * 157 * This allows quirking on Linux in a similar fashion. 158 */ 159 static const struct x86_cpu_id storage_d3_cpu_ids[] = { 160 X86_MATCH_VENDOR_FAM_MODEL(AMD, 23, 96, NULL), /* Renoir */ 161 X86_MATCH_VENDOR_FAM_MODEL(AMD, 23, 104, NULL), /* Lucienne */ 162 {} 163 }; 164 165 bool force_storage_d3(void) 166 { 167 return x86_match_cpu(storage_d3_cpu_ids); 168 } 169