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Diffstat (limited to 'drivers/iommu/amd/init.c')
-rw-r--r--drivers/iommu/amd/init.c48
1 files changed, 28 insertions, 20 deletions
diff --git a/drivers/iommu/amd/init.c b/drivers/iommu/amd/init.c
index bdcf167b4afe..2a822b229bd0 100644
--- a/drivers/iommu/amd/init.c
+++ b/drivers/iommu/amd/init.c
@@ -297,6 +297,22 @@ int amd_iommu_get_num_iommus(void)
return amd_iommus_present;
}
+#ifdef CONFIG_IRQ_REMAP
+static bool check_feature_on_all_iommus(u64 mask)
+{
+ bool ret = false;
+ struct amd_iommu *iommu;
+
+ for_each_iommu(iommu) {
+ ret = iommu_feature(iommu, mask);
+ if (!ret)
+ return false;
+ }
+
+ return true;
+}
+#endif
+
/*
* For IVHD type 0x11/0x40, EFR is also available via IVHD.
* Default to IVHD EFR since it is available sooner
@@ -813,9 +829,9 @@ static int iommu_ga_log_enable(struct amd_iommu *iommu)
return 0;
}
-#ifdef CONFIG_IRQ_REMAP
static int iommu_init_ga_log(struct amd_iommu *iommu)
{
+#ifdef CONFIG_IRQ_REMAP
u64 entry;
if (!AMD_IOMMU_GUEST_IR_VAPIC(amd_iommu_guest_ir))
@@ -845,25 +861,9 @@ static int iommu_init_ga_log(struct amd_iommu *iommu)
err_out:
free_ga_log(iommu);
return -EINVAL;
-}
-#endif /* CONFIG_IRQ_REMAP */
-
-static int iommu_init_ga(struct amd_iommu *iommu)
-{
- int ret = 0;
-
-#ifdef CONFIG_IRQ_REMAP
- /* Note: We have already checked GASup from IVRS table.
- * Now, we need to make sure that GAMSup is set.
- */
- if (AMD_IOMMU_GUEST_IR_VAPIC(amd_iommu_guest_ir) &&
- !iommu_feature(iommu, FEATURE_GAM_VAPIC))
- amd_iommu_guest_ir = AMD_IOMMU_GUEST_IR_LEGACY_GA;
-
- ret = iommu_init_ga_log(iommu);
+#else
+ return 0;
#endif /* CONFIG_IRQ_REMAP */
-
- return ret;
}
static int __init alloc_cwwb_sem(struct amd_iommu *iommu)
@@ -1845,7 +1845,7 @@ static int __init iommu_init_pci(struct amd_iommu *iommu)
if (iommu_feature(iommu, FEATURE_PPR) && alloc_ppr_log(iommu))
return -ENOMEM;
- ret = iommu_init_ga(iommu);
+ ret = iommu_init_ga_log(iommu);
if (ret)
return ret;
@@ -2479,6 +2479,14 @@ static void early_enable_iommus(void)
}
#ifdef CONFIG_IRQ_REMAP
+ /*
+ * Note: We have already checked GASup from IVRS table.
+ * Now, we need to make sure that GAMSup is set.
+ */
+ if (AMD_IOMMU_GUEST_IR_VAPIC(amd_iommu_guest_ir) &&
+ !check_feature_on_all_iommus(FEATURE_GAM_VAPIC))
+ amd_iommu_guest_ir = AMD_IOMMU_GUEST_IR_LEGACY_GA;
+
if (AMD_IOMMU_GUEST_IR_VAPIC(amd_iommu_guest_ir))
amd_iommu_irq_ops.capability |= (1 << IRQ_POSTING_CAP);
#endif