diff options
| author | Jason Gunthorpe <[email protected]> | 2023-06-27 17:06:29 +0000 |
|---|---|---|
| committer | Jason Gunthorpe <[email protected]> | 2023-06-27 17:06:29 +0000 |
| commit | 5f004bcaee4cb552cf1b46a505f18f08777db7e5 (patch) | |
| tree | c81bdd8e01ba8de9862c8bdb1b210559d4bcf154 /drivers/iommu/amd/init.c | |
| parent | RDMA/bnxt_re: Fix an IS_ERR() vs NULL check (diff) | |
| parent | Linux 6.4 (diff) | |
| download | kernel-5f004bcaee4cb552cf1b46a505f18f08777db7e5.tar.gz kernel-5f004bcaee4cb552cf1b46a505f18f08777db7e5.zip | |
Merge tag 'v6.4' into rdma.git for-next
Linux 6.4
Resolve conflicts between rdma rc and next in rxe_cq matching linux-next:
drivers/infiniband/sw/rxe/rxe_cq.c:
https://lore.kernel.org/r/[email protected]
Signed-off-by: Jason Gunthorpe <[email protected]>
Diffstat (limited to 'drivers/iommu/amd/init.c')
| -rw-r--r-- | drivers/iommu/amd/init.c | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/drivers/iommu/amd/init.c b/drivers/iommu/amd/init.c index 329a406cc37d..c2d80a4e5fb0 100644 --- a/drivers/iommu/amd/init.c +++ b/drivers/iommu/amd/init.c @@ -759,6 +759,30 @@ void amd_iommu_restart_event_logging(struct amd_iommu *iommu) } /* + * This function restarts event logging in case the IOMMU experienced + * an GA log overflow. + */ +void amd_iommu_restart_ga_log(struct amd_iommu *iommu) +{ + u32 status; + + status = readl(iommu->mmio_base + MMIO_STATUS_OFFSET); + if (status & MMIO_STATUS_GALOG_RUN_MASK) + return; + + pr_info_ratelimited("IOMMU GA Log restarting\n"); + + iommu_feature_disable(iommu, CONTROL_GALOG_EN); + iommu_feature_disable(iommu, CONTROL_GAINT_EN); + + writel(MMIO_STATUS_GALOG_OVERFLOW_MASK, + iommu->mmio_base + MMIO_STATUS_OFFSET); + + iommu_feature_enable(iommu, CONTROL_GAINT_EN); + iommu_feature_enable(iommu, CONTROL_GALOG_EN); +} + +/* * This function resets the command buffer if the IOMMU stopped fetching * commands from it. */ |