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| author | Suravee Suthikulpanit <suravee.suthikulpanit@amd.com> | 2022-05-11 12:51:31 +0530 |
|---|---|---|
| committer | Joerg Roedel <jroedel@suse.de> | 2022-06-23 09:49:24 +0200 |
| commit | 50ec7200cd4ae1d1105377b16b5fc5da8f55c86e (patch) | |
| tree | a423ebbb9d31ca096a68dc9f92d4e9362a41d7b9 /drivers/iommu/amd/init.c | |
| parent | 30179224869f0cfbbdbff09432651cbff6bdc3e6 (diff) | |
| download | linux-next-50ec7200cd4ae1d1105377b16b5fc5da8f55c86e.tar.gz | |
iommu/amd: Update (un)init_device_table_dma()
Include struct amd_iommu_pci_seg as a function parameter since
we need to access per PCI segment device table.
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/20220511072141.15485-26-vasant.hegde@amd.com
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Diffstat (limited to 'drivers/iommu/amd/init.c')
| -rw-r--r-- | drivers/iommu/amd/init.c | 27 |
1 files changed, 20 insertions, 7 deletions
diff --git a/drivers/iommu/amd/init.c b/drivers/iommu/amd/init.c index b7e54bb5efc5..3024fa9a89d5 100644 --- a/drivers/iommu/amd/init.c +++ b/drivers/iommu/amd/init.c @@ -238,7 +238,7 @@ static enum iommu_init_state init_state = IOMMU_START_STATE; static int amd_iommu_enable_interrupts(void); static int __init iommu_go_to_state(enum iommu_init_state state); -static void init_device_table_dma(void); +static void init_device_table_dma(struct amd_iommu_pci_seg *pci_seg); static bool amd_iommu_pre_enabled = true; @@ -2116,6 +2116,7 @@ static void print_iommu_info(void) static int __init amd_iommu_init_pci(void) { struct amd_iommu *iommu; + struct amd_iommu_pci_seg *pci_seg; int ret; for_each_iommu(iommu) { @@ -2146,7 +2147,8 @@ static int __init amd_iommu_init_pci(void) goto out; } - init_device_table_dma(); + for_each_pci_segment(pci_seg) + init_device_table_dma(pci_seg); for_each_iommu(iommu) iommu_flush_all_caches(iommu); @@ -2508,9 +2510,13 @@ static int __init init_memory_definitions(struct acpi_table_header *table) /* * Init the device table to not allow DMA access for devices */ -static void init_device_table_dma(void) +static void init_device_table_dma(struct amd_iommu_pci_seg *pci_seg) { u32 devid; + struct dev_table_entry *dev_table = pci_seg->dev_table; + + if (dev_table == NULL) + return; for (devid = 0; devid <= amd_iommu_last_bdf; ++devid) { set_dev_entry_bit(devid, DEV_ENTRY_VALID); @@ -2518,13 +2524,17 @@ static void init_device_table_dma(void) } } -static void __init uninit_device_table_dma(void) +static void __init uninit_device_table_dma(struct amd_iommu_pci_seg *pci_seg) { u32 devid; + struct dev_table_entry *dev_table = pci_seg->dev_table; + + if (dev_table == NULL) + return; for (devid = 0; devid <= amd_iommu_last_bdf; ++devid) { - amd_iommu_dev_table[devid].data[0] = 0ULL; - amd_iommu_dev_table[devid].data[1] = 0ULL; + dev_table[devid].data[0] = 0ULL; + dev_table[devid].data[1] = 0ULL; } } @@ -3117,8 +3127,11 @@ static int __init state_next(void) free_iommu_resources(); } else { struct amd_iommu *iommu; + struct amd_iommu_pci_seg *pci_seg; + + for_each_pci_segment(pci_seg) + uninit_device_table_dma(pci_seg); - uninit_device_table_dma(); for_each_iommu(iommu) iommu_flush_all_caches(iommu); } |