diff options
| author | Vasant Hegde <vasant.hegde@amd.com> | 2023-11-22 12:02:12 +0300 |
|---|---|---|
| committer | Joerg Roedel <jroedel@suse.de> | 2023-12-11 17:25:36 +0300 |
| commit | bbf85fe10faadbd237a7b8df4423de4ab4bd67e7 (patch) | |
| tree | 6014f2b67c8d6afc628edc376afaac8c20048c25 /drivers/iommu | |
| parent | 4f0a600799237ed95b403f24354305b0f81ccbb4 (diff) | |
| download | linux-bbf85fe10faadbd237a7b8df4423de4ab4bd67e7.tar.xz | |
iommu/amd: Refactor device iotlb invalidation code
build_inv_iotlb_pages() and build_inv_iotlb_pasid() pretty much duplicates
the code. Enhance build_inv_iotlb_pages() to invalidate guest IOTLB as
well. And remove build_inv_iotlb_pasid() function.
Suggested-by: Kishon Vijay Abraham I <kvijayab@amd.com>
Signed-off-by: Vasant Hegde <vasant.hegde@amd.com>
Reviewed-by: Suravee Suthikulpanit <suravee.suthikulpanit@amd.com>
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Link: https://lore.kernel.org/r/20231122090215.6191-7-vasant.hegde@amd.com
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Diffstat (limited to 'drivers/iommu')
| -rw-r--r-- | drivers/iommu/amd/iommu.c | 33 |
1 files changed, 12 insertions, 21 deletions
diff --git a/drivers/iommu/amd/iommu.c b/drivers/iommu/amd/iommu.c index 8c09e8f63913..a071e1d52c3e 100644 --- a/drivers/iommu/amd/iommu.c +++ b/drivers/iommu/amd/iommu.c @@ -1144,34 +1144,24 @@ static void build_inv_iommu_pages(struct iommu_cmd *cmd, u64 address, } static void build_inv_iotlb_pages(struct iommu_cmd *cmd, u16 devid, int qdep, - u64 address, size_t size) + u64 address, size_t size, + ioasid_t pasid, bool gn) { u64 inv_address = build_inv_address(address, size); memset(cmd, 0, sizeof(*cmd)); + cmd->data[0] = devid; cmd->data[0] |= (qdep & 0xff) << 24; cmd->data[1] = devid; cmd->data[2] = lower_32_bits(inv_address); cmd->data[3] = upper_32_bits(inv_address); - CMD_SET_TYPE(cmd, CMD_INV_IOTLB_PAGES); -} - -static void build_inv_iotlb_pasid(struct iommu_cmd *cmd, u16 devid, u32 pasid, - int qdep, u64 address, size_t size) -{ - u64 inv_address = build_inv_address(address, size); - - memset(cmd, 0, sizeof(*cmd)); + if (gn) { + cmd->data[0] |= ((pasid >> 8) & 0xff) << 16; + cmd->data[1] |= (pasid & 0xff) << 16; + cmd->data[2] |= CMD_INV_IOMMU_PAGES_GN_MASK; + } - cmd->data[0] = devid; - cmd->data[0] |= ((pasid >> 8) & 0xff) << 16; - cmd->data[0] |= (qdep & 0xff) << 24; - cmd->data[1] = devid; - cmd->data[1] |= (pasid & 0xff) << 16; - cmd->data[2] = lower_32_bits(inv_address); - cmd->data[2] |= CMD_INV_IOMMU_PAGES_GN_MASK; - cmd->data[3] = upper_32_bits(inv_address); CMD_SET_TYPE(cmd, CMD_INV_IOTLB_PAGES); } @@ -1404,7 +1394,8 @@ static int device_flush_iotlb(struct iommu_dev_data *dev_data, if (!iommu) return -EINVAL; - build_inv_iotlb_pages(&cmd, dev_data->devid, qdep, address, size); + build_inv_iotlb_pages(&cmd, dev_data->devid, qdep, address, + size, IOMMU_NO_PASID, false); return iommu_queue_command(iommu, &cmd); } @@ -2687,8 +2678,8 @@ static int __flush_pasid(struct protection_domain *domain, u32 pasid, iommu = rlookup_amd_iommu(dev_data->dev); if (!iommu) continue; - build_inv_iotlb_pasid(&cmd, dev_data->devid, pasid, - qdep, address, size); + build_inv_iotlb_pages(&cmd, dev_data->devid, qdep, + address, size, pasid, true); ret = iommu_queue_command(iommu, &cmd); if (ret != 0) |