106 lines
2.3 KiB
C
106 lines
2.3 KiB
C
|
/* SPDX-License-Identifier: GPL-2.0-only */
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Quirks for AMD IOMMU
|
||
|
|
*
|
||
|
|
* Copyright (C) 2019 Kai-Heng Feng <kai.heng.feng@canonical.com>
|
||
|
|
*/
|
||
|
|
|
||
|
|
#ifdef CONFIG_DMI
|
||
|
|
#include <linux/dmi.h>
|
||
|
|
|
||
|
|
#include "amd_iommu.h"
|
||
|
|
|
||
|
|
#define IVHD_SPECIAL_IOAPIC 1
|
||
|
|
|
||
|
|
struct ivrs_quirk_entry {
|
||
|
|
u8 id;
|
||
|
|
u32 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, (u32 *)&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
|