From: Suravee Suthikulpanit <suravee.suthikulpa...@amd.com>
Replace global amd_iommu_dev_table with per PCI segment device table.
Also remove "dev_table_size".
Co-developed-by: Vasant Hegde <vasant.he...@amd.com>
Signed-off-by: Vasant Hegde <vasant.he...@amd.com>
Signed-off-by: Suravee Suthikulpanit <suravee.suthikulpa...@amd.com>
---
drivers/iommu/amd/amd_iommu_types.h | 6 ------
drivers/iommu/amd/init.c | 30 +++--------------------------
drivers/iommu/amd/iommu.c | 8 +++++---
3 files changed, 8 insertions(+), 36 deletions(-)
diff --git a/drivers/iommu/amd/amd_iommu_types.h
b/drivers/iommu/amd/amd_iommu_types.h
index 334206381f84..dc76ee2c3ea5 100644
--- a/drivers/iommu/amd/amd_iommu_types.h
+++ b/drivers/iommu/amd/amd_iommu_types.h
@@ -826,12 +826,6 @@ struct unity_map_entry {
* Data structures for device handling
*/
-/*
- * Device table used by hardware. Read and write accesses by software are
- * locked with the amd_iommu_pd_table lock.
- */
-extern struct dev_table_entry *amd_iommu_dev_table;
-
/*
* Alias table to find requestor ids to device ids. Not locked because only
* read on runtime.
diff --git a/drivers/iommu/amd/init.c b/drivers/iommu/amd/init.c
index b2ddf407e967..dd667dfb4355 100644
--- a/drivers/iommu/amd/init.c
+++ b/drivers/iommu/amd/init.c
@@ -185,14 +185,6 @@ static bool amd_iommu_pc_present __read_mostly;
bool amd_iommu_force_isolation __read_mostly;
-/*
- * Pointer to the device table which is shared by all AMD IOMMUs
- * it is indexed by the PCI device id or the HT unit id and contains
- * information about the domain the device belongs to as well as the
- * page table root pointer.
- */
-struct dev_table_entry *amd_iommu_dev_table;
-
/*
* The alias table is a driver specific data structure which contains the
* mappings of the PCI device ids to the actual requestor ids on the IOMMU.
@@ -206,7 +198,6 @@ u16 *amd_iommu_alias_table;
*/
unsigned long *amd_iommu_pd_alloc_bitmap;
-static u32 dev_table_size; /* size of the device table */
static u32 alias_table_size; /* size of the alias table */
enum iommu_init_state {
@@ -402,10 +393,11 @@ static void iommu_set_device_table(struct amd_iommu
*iommu)
{
u64 entry;
u32 dev_table_size = iommu->pci_seg->dev_table_size;
+ void *dev_table = (void *)get_dev_table(iommu);
BUG_ON(iommu->mmio_base == NULL);
- entry = iommu_virt_to_phys(amd_iommu_dev_table);
+ entry = iommu_virt_to_phys(dev_table);
entry |= (dev_table_size >> 12) - 1;
memcpy_toio(iommu->mmio_base + MMIO_DEV_TABLE_OFFSET,
&entry, sizeof(entry));
@@ -1148,12 +1140,6 @@ void amd_iommu_apply_erratum_63(struct amd_iommu *iommu,
u16 devid)
set_dev_entry_bit(iommu, devid, DEV_ENTRY_IW);
}
-/* Writes the specific IOMMU for a device into the rlookup table */
-static void __init set_iommu_for_device(struct amd_iommu *iommu, u16 devid)
-{
- iommu->pci_seg->rlookup_table[devid] = iommu;
-}
-
/*
* This function takes the device specific flags read from the ACPI
* table and sets up the device table entry with that information
@@ -1178,7 +1164,7 @@ static void __init set_dev_entry_from_acpi(struct
amd_iommu *iommu,
amd_iommu_apply_erratum_63(iommu, devid);
- set_iommu_for_device(iommu, devid);
+ amd_iommu_set_rlookup_table(iommu, devid);
}
int __init add_special_device(u8 type, u8 id, u16 *devid, bool cmd_line)
@@ -2809,10 +2795,6 @@ static void __init free_iommu_resources(void)
get_order(alias_table_size));
amd_iommu_alias_table = NULL;
- free_pages((unsigned long)amd_iommu_dev_table,
- get_order(dev_table_size));
- amd_iommu_dev_table = NULL;
-
free_iommu_all();
free_pci_segment();
}
@@ -2941,16 +2923,10 @@ static int __init early_amd_iommu_init(void)
amd_iommu_target_ivhd_type = get_highest_supported_ivhd_type(ivrs_base);
DUMP_printk("Using IVHD type %#x\n", amd_iommu_target_ivhd_type);
- dev_table_size = tbl_size(DEV_TABLE_ENTRY_SIZE);
alias_table_size = tbl_size(ALIAS_TABLE_ENTRY_SIZE);
/* Device table - directly used by all IOMMUs */
ret = -ENOMEM;
- amd_iommu_dev_table = (void *)__get_free_pages(
- GFP_KERNEL | __GFP_ZERO | GFP_DMA32,
- get_order(dev_table_size));
- if (amd_iommu_dev_table == NULL)
- goto out;
/*
* Alias table - map PCI Bus/Dev/Func to Bus/Dev/Func the
diff --git a/drivers/iommu/amd/iommu.c b/drivers/iommu/amd/iommu.c
index 7fb9e9a3291b..13731fa241f2 100644
--- a/drivers/iommu/amd/iommu.c
+++ b/drivers/iommu/amd/iommu.c
@@ -230,6 +230,7 @@ static struct iommu_dev_data *search_dev_data(struct
amd_iommu *iommu, u16 devid
static int clone_alias(struct pci_dev *pdev, u16 alias, void *data)
{
struct amd_iommu *iommu;
+ struct dev_table_entry *dev_table;
u16 devid = pci_dev_id(pdev);
if (devid == alias)
@@ -240,9 +241,10 @@ static int clone_alias(struct pci_dev *pdev, u16 alias,
void *data)
return 0;
amd_iommu_set_rlookup_table(iommu, alias);
- memcpy(amd_iommu_dev_table[alias].data,
- amd_iommu_dev_table[devid].data,
- sizeof(amd_iommu_dev_table[alias].data));
+ dev_table = get_dev_table(iommu);
+ memcpy(dev_table[alias].data,
+ dev_table[devid].data,
+ sizeof(dev_table[alias].data));
return 0;
}
--
2.27.0
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