projects / linux-2.6-block.git / blame
| Commit | Line | Data |
|---|---|---|
| 93d05155 KHF |
1 | /* SPDX-License-Identifier: GPL-2.0-only */ |
| 2 | ||
| 3 | /* | |
| 4 | * Quirks for AMD IOMMU | |
| 5 | * | |
| 6 | * Copyright (C) 2019 Kai-Heng Feng <kai.heng.feng@canonical.com> | |
| 7 | */ | |
| 8 | ||
| 9 | #ifdef CONFIG_DMI | |
| 10 | #include <linux/dmi.h> | |
| 11 | ||
| 12 | #include "amd_iommu.h" | |
| 13 | ||
| 14 | #define IVHD_SPECIAL_IOAPIC 1 | |
| 15 | ||
| 16 | struct ivrs_quirk_entry { | |
| 17 | u8 id; | |
| 18 | u16 devid; | |
| 19 | }; | |
| 20 | ||
| 21 | enum { | |
| 22 | DELL_INSPIRON_7375 = 0, | |
| 23 | DELL_LATITUDE_5495, | |
| 24 | LENOVO_IDEAPAD_330S_15ARR, | |
| 25 | }; | |
| 26 | ||
| 27 | static const struct ivrs_quirk_entry ivrs_ioapic_quirks[][3] __initconst = { | |
| 28 | /* ivrs_ioapic[4]=00:14.0 ivrs_ioapic[5]=00:00.2 */ | |
| 29 | [DELL_INSPIRON_7375] = { | |
| 30 | { .id = 4, .devid = 0xa0 }, | |
| 31 | { .id = 5, .devid = 0x2 }, | |
| 32 | {} | |
| 33 | }, | |
| 34 | /* ivrs_ioapic[4]=00:14.0 */ | |
| 35 | [DELL_LATITUDE_5495] = { | |
| 36 | { .id = 4, .devid = 0xa0 }, | |
| 37 | {} | |
| 38 | }, | |
| 39 | /* ivrs_ioapic[32]=00:14.0 */ | |
| 40 | [LENOVO_IDEAPAD_330S_15ARR] = { | |
| 41 | { .id = 32, .devid = 0xa0 }, | |
| 42 | {} | |
| 43 | }, | |
| 44 | {} | |
| 45 | }; | |
| 46 | ||
| 47 | static int __init ivrs_ioapic_quirk_cb(const struct dmi_system_id *d) | |
| 48 | { | |
| 49 | const struct ivrs_quirk_entry *i; | |
| 50 | ||
| 51 | for (i = d->driver_data; i->id != 0 && i->devid != 0; i++) | |
| 52 | add_special_device(IVHD_SPECIAL_IOAPIC, i->id, (u16 *)&i->devid, 0); | |
| 53 | ||
| 54 | return 0; | |
| 55 | } | |
| 56 | ||
| 57 | static const struct dmi_system_id ivrs_quirks[] __initconst = { | |
| 58 | { | |
| 59 | .callback = ivrs_ioapic_quirk_cb, | |
| 60 | .ident = "Dell Inspiron 7375", | |
| 61 | .matches = { | |
| 62 | DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), | |
| 63 | DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 7375"), | |
| 64 | }, | |
| 65 | .driver_data = (void *)&ivrs_ioapic_quirks[DELL_INSPIRON_7375], | |
| 66 | }, | |
| 67 | { | |
| 68 | .callback = ivrs_ioapic_quirk_cb, | |
| 69 | .ident = "Dell Latitude 5495", | |
| 70 | .matches = { | |
| 71 | DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), | |
| 72 | DMI_MATCH(DMI_PRODUCT_NAME, "Latitude 5495"), | |
| 73 | }, | |
| 74 | .driver_data = (void *)&ivrs_ioapic_quirks[DELL_LATITUDE_5495], | |
| 75 | }, | |
| 76 | { | |
| 77 | .callback = ivrs_ioapic_quirk_cb, | |
| 78 | .ident = "Lenovo ideapad 330S-15ARR", | |
| 79 | .matches = { | |
| 80 | DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), | |
| 81 | DMI_MATCH(DMI_PRODUCT_NAME, "81FB"), | |
| 82 | }, | |
| 83 | .driver_data = (void *)&ivrs_ioapic_quirks[LENOVO_IDEAPAD_330S_15ARR], | |
| 84 | }, | |
| 85 | {} | |
| 86 | }; | |
| 87 | ||
| 88 | void __init amd_iommu_apply_ivrs_quirks(void) | |
| 89 | { | |
| 90 | dmi_check_system(ivrs_quirks); | |
| 91 | } | |
| 92 | #endif |