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 const char *path; 42 unsigned long long status; 43 }; 44 45 #define ENTRY(status, hid, uid, path, cpu_model, dmi...) { \ 46 { { hid, }, {} }, \ 47 { X86_MATCH_INTEL_FAM6_MODEL(cpu_model, NULL), {} }, \ 48 { { .matches = dmi }, {} }, \ 49 uid, \ 50 path, \ 51 status, \ 52 } 53 54 #define PRESENT_ENTRY_HID(hid, uid, cpu_model, dmi...) \ 55 ENTRY(ACPI_STA_DEFAULT, hid, uid, NULL, cpu_model, dmi) 56 57 #define NOT_PRESENT_ENTRY_HID(hid, uid, cpu_model, dmi...) \ 58 ENTRY(0, hid, uid, NULL, cpu_model, dmi) 59 60 #define PRESENT_ENTRY_PATH(path, cpu_model, dmi...) \ 61 ENTRY(ACPI_STA_DEFAULT, "", NULL, path, cpu_model, dmi) 62 63 #define NOT_PRESENT_ENTRY_PATH(path, cpu_model, dmi...) \ 64 ENTRY(0, "", NULL, path, cpu_model, dmi) 65 66 static const struct override_status_id override_status_ids[] = { 67 /* 68 * Bay / Cherry Trail PWM directly poked by GPU driver in win10, 69 * but Linux uses a separate PWM driver, harmless if not used. 70 */ 71 PRESENT_ENTRY_HID("80860F09", "1", ATOM_SILVERMONT, {}), 72 PRESENT_ENTRY_HID("80862288", "1", ATOM_AIRMONT, {}), 73 74 /* 75 * The INT0002 device is necessary to clear wakeup interrupt sources 76 * on Cherry Trail devices, without it we get nobody cared IRQ msgs. 77 */ 78 PRESENT_ENTRY_HID("INT0002", "1", ATOM_AIRMONT, {}), 79 /* 80 * On the Dell Venue 11 Pro 7130 and 7139, the DSDT hides 81 * the touchscreen ACPI device until a certain time 82 * after _SB.PCI0.GFX0.LCD.LCD1._ON gets called has passed 83 * *and* _STA has been called at least 3 times since. 84 */ 85 PRESENT_ENTRY_HID("SYNA7500", "1", HASWELL_L, { 86 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), 87 DMI_MATCH(DMI_PRODUCT_NAME, "Venue 11 Pro 7130"), 88 }), 89 PRESENT_ENTRY_HID("SYNA7500", "1", HASWELL_L, { 90 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), 91 DMI_MATCH(DMI_PRODUCT_NAME, "Venue 11 Pro 7139"), 92 }), 93 94 /* 95 * The GPD win BIOS dated 20170221 has disabled the accelerometer, the 96 * drivers sometimes cause crashes under Windows and this is how the 97 * manufacturer has solved this :| Note that the the DMI data is less 98 * generic then it seems, a board_vendor of "AMI Corporation" is quite 99 * rare and a board_name of "Default String" also is rare. 100 * 101 * Unfortunately the GPD pocket also uses these strings and its BIOS 102 * was copy-pasted from the GPD win, so it has a disabled KIOX000A 103 * node which we should not enable, thus we also check the BIOS date. 104 */ 105 PRESENT_ENTRY_HID("KIOX000A", "1", ATOM_AIRMONT, { 106 DMI_MATCH(DMI_BOARD_VENDOR, "AMI Corporation"), 107 DMI_MATCH(DMI_BOARD_NAME, "Default string"), 108 DMI_MATCH(DMI_PRODUCT_NAME, "Default string"), 109 DMI_MATCH(DMI_BIOS_DATE, "02/21/2017") 110 }), 111 PRESENT_ENTRY_HID("KIOX000A", "1", ATOM_AIRMONT, { 112 DMI_MATCH(DMI_BOARD_VENDOR, "AMI Corporation"), 113 DMI_MATCH(DMI_BOARD_NAME, "Default string"), 114 DMI_MATCH(DMI_PRODUCT_NAME, "Default string"), 115 DMI_MATCH(DMI_BIOS_DATE, "03/20/2017") 116 }), 117 PRESENT_ENTRY_HID("KIOX000A", "1", ATOM_AIRMONT, { 118 DMI_MATCH(DMI_BOARD_VENDOR, "AMI Corporation"), 119 DMI_MATCH(DMI_BOARD_NAME, "Default string"), 120 DMI_MATCH(DMI_PRODUCT_NAME, "Default string"), 121 DMI_MATCH(DMI_BIOS_DATE, "05/25/2017") 122 }), 123 }; 124 125 bool acpi_device_override_status(struct acpi_device *adev, unsigned long long *status) 126 { 127 bool ret = false; 128 unsigned int i; 129 130 for (i = 0; i < ARRAY_SIZE(override_status_ids); i++) { 131 if (!x86_match_cpu(override_status_ids[i].cpu_ids)) 132 continue; 133 134 if (override_status_ids[i].dmi_ids[0].matches[0].slot && 135 !dmi_check_system(override_status_ids[i].dmi_ids)) 136 continue; 137 138 if (override_status_ids[i].path) { 139 struct acpi_buffer path = { ACPI_ALLOCATE_BUFFER, NULL }; 140 bool match; 141 142 if (acpi_get_name(adev->handle, ACPI_FULL_PATHNAME, &path)) 143 continue; 144 145 match = strcmp((char *)path.pointer, override_status_ids[i].path) == 0; 146 kfree(path.pointer); 147 148 if (!match) 149 continue; 150 } else { 151 if (acpi_match_device_ids(adev, override_status_ids[i].hid)) 152 continue; 153 154 if (!adev->pnp.unique_id || 155 strcmp(adev->pnp.unique_id, override_status_ids[i].uid)) 156 continue; 157 } 158 159 *status = override_status_ids[i].status; 160 ret = true; 161 break; 162 } 163 164 return ret; 165 } 166 167 /* 168 * AMD systems from Renoir and Lucienne *require* that the NVME controller 169 * is put into D3 over a Modern Standby / suspend-to-idle cycle. 170 * 171 * This is "typically" accomplished using the `StorageD3Enable` 172 * property in the _DSD that is checked via the `acpi_storage_d3` function 173 * but this property was introduced after many of these systems launched 174 * and most OEM systems don't have it in their BIOS. 175 * 176 * The Microsoft documentation for StorageD3Enable mentioned that Windows has 177 * a hardcoded allowlist for D3 support, which was used for these platforms. 178 * 179 * This allows quirking on Linux in a similar fashion. 180 */ 181 static const struct x86_cpu_id storage_d3_cpu_ids[] = { 182 X86_MATCH_VENDOR_FAM_MODEL(AMD, 23, 96, NULL), /* Renoir */ 183 X86_MATCH_VENDOR_FAM_MODEL(AMD, 23, 104, NULL), /* Lucienne */ 184 {} 185 }; 186 187 bool force_storage_d3(void) 188 { 189 return x86_match_cpu(storage_d3_cpu_ids); 190 } 191