forked from Qortal/Brooklyn
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
105 lines
2.3 KiB
105 lines
2.3 KiB
/* SPDX-License-Identifier: GPL-2.0-only */ |
|
|
|
/* |
|
* Quirks for AMD IOMMU |
|
* |
|
* Copyright (C) 2019 Kai-Heng Feng <[email protected]> |
|
*/ |
|
|
|
#ifdef CONFIG_DMI |
|
#include <linux/dmi.h> |
|
|
|
#include "amd_iommu.h" |
|
|
|
#define IVHD_SPECIAL_IOAPIC 1 |
|
|
|
struct ivrs_quirk_entry { |
|
u8 id; |
|
u16 devid; |
|
}; |
|
|
|
enum { |
|
DELL_INSPIRON_7375 = 0, |
|
DELL_LATITUDE_5495, |
|
LENOVO_IDEAPAD_330S_15ARR, |
|
}; |
|
|
|
static const struct ivrs_quirk_entry ivrs_ioapic_quirks[][3] __initconst = { |
|
/* ivrs_ioapic[4]=00:14.0 ivrs_ioapic[5]=00:00.2 */ |
|
[DELL_INSPIRON_7375] = { |
|
{ .id = 4, .devid = 0xa0 }, |
|
{ .id = 5, .devid = 0x2 }, |
|
{} |
|
}, |
|
/* ivrs_ioapic[4]=00:14.0 */ |
|
[DELL_LATITUDE_5495] = { |
|
{ .id = 4, .devid = 0xa0 }, |
|
{} |
|
}, |
|
/* ivrs_ioapic[32]=00:14.0 */ |
|
[LENOVO_IDEAPAD_330S_15ARR] = { |
|
{ .id = 32, .devid = 0xa0 }, |
|
{} |
|
}, |
|
{} |
|
}; |
|
|
|
static int __init ivrs_ioapic_quirk_cb(const struct dmi_system_id *d) |
|
{ |
|
const struct ivrs_quirk_entry *i; |
|
|
|
for (i = d->driver_data; i->id != 0 && i->devid != 0; i++) |
|
add_special_device(IVHD_SPECIAL_IOAPIC, i->id, (u16 *)&i->devid, 0); |
|
|
|
return 0; |
|
} |
|
|
|
static const struct dmi_system_id ivrs_quirks[] __initconst = { |
|
{ |
|
.callback = ivrs_ioapic_quirk_cb, |
|
.ident = "Dell Inspiron 7375", |
|
.matches = { |
|
DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), |
|
DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 7375"), |
|
}, |
|
.driver_data = (void *)&ivrs_ioapic_quirks[DELL_INSPIRON_7375], |
|
}, |
|
{ |
|
.callback = ivrs_ioapic_quirk_cb, |
|
.ident = "Dell Latitude 5495", |
|
.matches = { |
|
DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), |
|
DMI_MATCH(DMI_PRODUCT_NAME, "Latitude 5495"), |
|
}, |
|
.driver_data = (void *)&ivrs_ioapic_quirks[DELL_LATITUDE_5495], |
|
}, |
|
{ |
|
/* |
|
* Acer Aspire A315-41 requires the very same workaround as |
|
* Dell Latitude 5495 |
|
*/ |
|
.callback = ivrs_ioapic_quirk_cb, |
|
.ident = "Acer Aspire A315-41", |
|
.matches = { |
|
DMI_MATCH(DMI_SYS_VENDOR, "Acer"), |
|
DMI_MATCH(DMI_PRODUCT_NAME, "Aspire A315-41"), |
|
}, |
|
.driver_data = (void *)&ivrs_ioapic_quirks[DELL_LATITUDE_5495], |
|
}, |
|
{ |
|
.callback = ivrs_ioapic_quirk_cb, |
|
.ident = "Lenovo ideapad 330S-15ARR", |
|
.matches = { |
|
DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), |
|
DMI_MATCH(DMI_PRODUCT_NAME, "81FB"), |
|
}, |
|
.driver_data = (void *)&ivrs_ioapic_quirks[LENOVO_IDEAPAD_330S_15ARR], |
|
}, |
|
{} |
|
}; |
|
|
|
void __init amd_iommu_apply_ivrs_quirks(void) |
|
{ |
|
dmi_check_system(ivrs_quirks); |
|
} |
|
#endif
|
|
|