From: Suravee Suthikulpanit <suravee.suthikulpanit@amd.com>
Date: Wed, 6 Jul 2022 17:08:20 +0530
Subject: iommu/amd: Include PCI segment ID when initialize IOMMU
Git-commit: a45627baa7bc56d633ade47d5503bd2be53f1baa
Patch-mainline: v6.0-rc1
References: bsc#1205701
Extend current device ID variables to 32-bit to include the 16-bit
segment ID when parsing device information from IVRS table to initialize
each IOMMU.
Co-developed-by: Vasant Hegde <vasant.hegde@amd.com>
Signed-off-by: Vasant Hegde <vasant.hegde@amd.com>
Signed-off-by: Suravee Suthikulpanit <suravee.suthikulpanit@amd.com>
Link: https://lore.kernel.org/r/20220706113825.25582-31-vasant.hegde@amd.com
Signed-off-by: Joerg Roedel <jroedel@suse.de>
---
drivers/iommu/amd/amd_iommu.h | 2 +-
drivers/iommu/amd/amd_iommu_types.h | 6 ++--
drivers/iommu/amd/init.c | 56 +++++++++++++++++++------------------
drivers/iommu/amd/quirks.c | 4 +--
4 files changed, 35 insertions(+), 33 deletions(-)
diff --git a/drivers/iommu/amd/amd_iommu.h b/drivers/iommu/amd/amd_iommu.h
index e73bd48fc716..9b7092182ca7 100644
--- a/drivers/iommu/amd/amd_iommu.h
+++ b/drivers/iommu/amd/amd_iommu.h
@@ -125,7 +125,7 @@ static inline int get_pci_sbdf_id(struct pci_dev *pdev)
extern bool translation_pre_enabled(struct amd_iommu *iommu);
extern bool amd_iommu_is_attach_deferred(struct device *dev);
-extern int __init add_special_device(u8 type, u8 id, u16 *devid,
+extern int __init add_special_device(u8 type, u8 id, u32 *devid,
bool cmd_line);
#ifdef CONFIG_DMI
diff --git a/drivers/iommu/amd/amd_iommu_types.h b/drivers/iommu/amd/amd_iommu_types.h
index ea238e8e6c99..1ca54803702a 100644
--- a/drivers/iommu/amd/amd_iommu_types.h
+++ b/drivers/iommu/amd/amd_iommu_types.h
@@ -744,8 +744,8 @@ struct acpihid_map_entry {
struct list_head list;
u8 uid[ACPIHID_UID_LEN];
u8 hid[ACPIHID_HID_LEN];
- u16 devid;
- u16 root_devid;
+ u32 devid;
+ u32 root_devid;
bool cmd_line;
struct iommu_group *group;
};
@@ -753,7 +753,7 @@ struct acpihid_map_entry {
struct devid_map {
struct list_head list;
u8 id;
- u16 devid;
+ u32 devid;
bool cmd_line;
};
diff --git a/drivers/iommu/amd/init.c b/drivers/iommu/amd/init.c
index a3a5f906679e..9011d9be6954 100644
--- a/drivers/iommu/amd/init.c
+++ b/drivers/iommu/amd/init.c
@@ -1148,7 +1148,7 @@ static void __init set_dev_entry_from_acpi(struct amd_iommu *iommu,
amd_iommu_set_rlookup_table(iommu, devid);
}
-int __init add_special_device(u8 type, u8 id, u16 *devid, bool cmd_line)
+int __init add_special_device(u8 type, u8 id, u32 *devid, bool cmd_line)
{
struct devid_map *entry;
struct list_head *list;
@@ -1185,7 +1185,7 @@ int __init add_special_device(u8 type, u8 id, u16 *devid, bool cmd_line)
return 0;
}
-static int __init add_acpi_hid_device(u8 *hid, u8 *uid, u16 *devid,
+static int __init add_acpi_hid_device(u8 *hid, u8 *uid, u32 *devid,
bool cmd_line)
{
struct acpihid_map_entry *entry;
@@ -1264,7 +1264,7 @@ static int __init init_iommu_from_acpi(struct amd_iommu *iommu,
{
u8 *p = (u8 *)h;
u8 *end = p, flags = 0;
- u16 devid = 0, devid_start = 0, devid_to = 0;
+ u16 devid = 0, devid_start = 0, devid_to = 0, seg_id;
u32 dev_i, ext_flags = 0;
bool alias = false;
struct ivhd_entry *e;
@@ -1300,6 +1300,8 @@ static int __init init_iommu_from_acpi(struct amd_iommu *iommu,
while (p < end) {
e = (struct ivhd_entry *)p;
+ seg_id = pci_seg->id;
+
switch (e->type) {
case IVHD_DEV_ALL:
@@ -1310,9 +1312,9 @@ static int __init init_iommu_from_acpi(struct amd_iommu *iommu,
break;
case IVHD_DEV_SELECT:
- DUMP_printk(" DEV_SELECT\t\t\t devid: %02x:%02x.%x "
+ DUMP_printk(" DEV_SELECT\t\t\t devid: %04x:%02x:%02x.%x "
"flags: %02x\n",
- PCI_BUS_NUM(e->devid),
+ seg_id, PCI_BUS_NUM(e->devid),
PCI_SLOT(e->devid),
PCI_FUNC(e->devid),
e->flags);
@@ -1323,8 +1325,8 @@ static int __init init_iommu_from_acpi(struct amd_iommu *iommu,
case IVHD_DEV_SELECT_RANGE_START:
DUMP_printk(" DEV_SELECT_RANGE_START\t "
- "devid: %02x:%02x.%x flags: %02x\n",
- PCI_BUS_NUM(e->devid),
+ "devid: %04x:%02x:%02x.%x flags: %02x\n",
+ seg_id, PCI_BUS_NUM(e->devid),
PCI_SLOT(e->devid),
PCI_FUNC(e->devid),
e->flags);
@@ -1336,9 +1338,9 @@ static int __init init_iommu_from_acpi(struct amd_iommu *iommu,
break;
case IVHD_DEV_ALIAS:
- DUMP_printk(" DEV_ALIAS\t\t\t devid: %02x:%02x.%x "
+ DUMP_printk(" DEV_ALIAS\t\t\t devid: %04x:%02x:%02x.%x "
"flags: %02x devid_to: %02x:%02x.%x\n",
- PCI_BUS_NUM(e->devid),
+ seg_id, PCI_BUS_NUM(e->devid),
PCI_SLOT(e->devid),
PCI_FUNC(e->devid),
e->flags,
@@ -1355,13 +1357,13 @@ static int __init init_iommu_from_acpi(struct amd_iommu *iommu,
case IVHD_DEV_ALIAS_RANGE:
DUMP_printk(" DEV_ALIAS_RANGE\t\t "
- "devid: %02x:%02x.%x flags: %02x "
- "devid_to: %02x:%02x.%x\n",
- PCI_BUS_NUM(e->devid),
+ "devid: %04x:%02x:%02x.%x flags: %02x "
+ "devid_to: %04x:%02x:%02x.%x\n",
+ seg_id, PCI_BUS_NUM(e->devid),
PCI_SLOT(e->devid),
PCI_FUNC(e->devid),
e->flags,
- PCI_BUS_NUM(e->ext >> 8),
+ seg_id, PCI_BUS_NUM(e->ext >> 8),
PCI_SLOT(e->ext >> 8),
PCI_FUNC(e->ext >> 8));
@@ -1373,9 +1375,9 @@ static int __init init_iommu_from_acpi(struct amd_iommu *iommu,
break;
case IVHD_DEV_EXT_SELECT:
- DUMP_printk(" DEV_EXT_SELECT\t\t devid: %02x:%02x.%x "
+ DUMP_printk(" DEV_EXT_SELECT\t\t devid: %04x:%02x:%02x.%x "
"flags: %02x ext: %08x\n",
- PCI_BUS_NUM(e->devid),
+ seg_id, PCI_BUS_NUM(e->devid),
PCI_SLOT(e->devid),
PCI_FUNC(e->devid),
e->flags, e->ext);
@@ -1387,8 +1389,8 @@ static int __init init_iommu_from_acpi(struct amd_iommu *iommu,
case IVHD_DEV_EXT_SELECT_RANGE:
DUMP_printk(" DEV_EXT_SELECT_RANGE\t devid: "
- "%02x:%02x.%x flags: %02x ext: %08x\n",
- PCI_BUS_NUM(e->devid),
+ "%04x:%02x:%02x.%x flags: %02x ext: %08x\n",
+ seg_id, PCI_BUS_NUM(e->devid),
PCI_SLOT(e->devid),
PCI_FUNC(e->devid),
e->flags, e->ext);
@@ -1400,8 +1402,8 @@ static int __init init_iommu_from_acpi(struct amd_iommu *iommu,
break;
case IVHD_DEV_RANGE_END:
- DUMP_printk(" DEV_RANGE_END\t\t devid: %02x:%02x.%x\n",
- PCI_BUS_NUM(e->devid),
+ DUMP_printk(" DEV_RANGE_END\t\t devid: %04x:%02x:%02x.%x\n",
+ seg_id, PCI_BUS_NUM(e->devid),
PCI_SLOT(e->devid),
PCI_FUNC(e->devid));
@@ -1419,11 +1421,11 @@ static int __init init_iommu_from_acpi(struct amd_iommu *iommu,
case IVHD_DEV_SPECIAL: {
u8 handle, type;
const char *var;
- u16 devid;
+ u32 devid;
int ret;
handle = e->ext & 0xff;
- devid = (e->ext >> 8) & 0xffff;
+ devid = PCI_SEG_DEVID_TO_SBDF(seg_id, (e->ext >> 8));
type = (e->ext >> 24) & 0xff;
if (type == IVHD_SPECIAL_IOAPIC)
@@ -1433,9 +1435,9 @@ static int __init init_iommu_from_acpi(struct amd_iommu *iommu,
else
var = "UNKNOWN";
- DUMP_printk(" DEV_SPECIAL(%s[%d])\t\tdevid: %02x:%02x.%x\n",
+ DUMP_printk(" DEV_SPECIAL(%s[%d])\t\tdevid: %04x:%02x:%02x.%x\n",
var, (int)handle,
- PCI_BUS_NUM(devid),
+ seg_id, PCI_BUS_NUM(devid),
PCI_SLOT(devid),
PCI_FUNC(devid));
@@ -1453,7 +1455,7 @@ static int __init init_iommu_from_acpi(struct amd_iommu *iommu,
break;
}
case IVHD_DEV_ACPI_HID: {
- u16 devid;
+ u32 devid;
u8 hid[ACPIHID_HID_LEN];
u8 uid[ACPIHID_UID_LEN];
int ret;
@@ -1496,9 +1498,9 @@ static int __init init_iommu_from_acpi(struct amd_iommu *iommu,
break;
}
- devid = e->devid;
- DUMP_printk(" DEV_ACPI_HID(%s[%s])\t\tdevid: %02x:%02x.%x\n",
- hid, uid,
+ devid = PCI_SEG_DEVID_TO_SBDF(seg_id, e->devid);
+ DUMP_printk(" DEV_ACPI_HID(%s[%s])\t\tdevid: %04x:%02x:%02x.%x\n",
+ hid, uid, seg_id,
PCI_BUS_NUM(devid),
PCI_SLOT(devid),
PCI_FUNC(devid));
diff --git a/drivers/iommu/amd/quirks.c b/drivers/iommu/amd/quirks.c
index 5120ce4fdce3..79dbb8f33b47 100644
--- a/drivers/iommu/amd/quirks.c
+++ b/drivers/iommu/amd/quirks.c
@@ -15,7 +15,7 @@
struct ivrs_quirk_entry {
u8 id;
- u16 devid;
+ u32 devid;
};
enum {
@@ -49,7 +49,7 @@ 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);
+ add_special_device(IVHD_SPECIAL_IOAPIC, i->id, (u32 *)&i->devid, 0);
return 0;
}