*/
static DEFINE_SPINLOCK(pasid_lock);
u32 intel_pasid_max_id = PASID_MAX;
-static DEFINE_IDR(pasid_idr);
-
-int intel_pasid_alloc_id(void *ptr, int start, int end, gfp_t gfp)
-{
- int ret, min, max;
-
- min = max_t(int, start, PASID_MIN);
- max = min_t(int, end, intel_pasid_max_id);
-
- WARN_ON(in_interrupt());
- idr_preload(gfp);
- spin_lock(&pasid_lock);
- ret = idr_alloc(&pasid_idr, ptr, min, max, GFP_ATOMIC);
- spin_unlock(&pasid_lock);
- idr_preload_end();
-
- return ret;
-}
-
-void intel_pasid_free_id(int pasid)
-{
- spin_lock(&pasid_lock);
- idr_remove(&pasid_idr, pasid);
- spin_unlock(&pasid_lock);
-}
-
-void *intel_pasid_lookup_id(int pasid)
-{
- void *p;
-
- spin_lock(&pasid_lock);
- p = idr_find(&pasid_idr, pasid);
- spin_unlock(&pasid_lock);
-
- return p;
-}
/*
* Per device pasid table management:
devtlb_invalidation_with_pasid(iommu, dev, pasid);
}
+static void pasid_flush_caches(struct intel_iommu *iommu,
+ struct pasid_entry *pte,
+ int pasid, u16 did)
+{
+ if (!ecap_coherent(iommu->ecap))
+ clflush_cache_range(pte, sizeof(*pte));
+
+ if (cap_caching_mode(iommu->cap)) {
+ pasid_cache_invalidation_with_pasid(iommu, did, pasid);
+ iotlb_invalidation_with_pasid(iommu, did, pasid);
+ } else {
+ iommu_flush_write_buffer(iommu);
+ }
+}
+
/*
* Set up the scalable mode pasid table entry for first only
* translation type.
}
#ifdef CONFIG_X86
- if (cpu_feature_enabled(X86_FEATURE_LA57))
- pasid_set_flpm(pte, 1);
+ /* Both CPU and IOMMU paging mode need to match */
+ if (cpu_feature_enabled(X86_FEATURE_LA57)) {
+ if (cap_5lp_support(iommu->cap)) {
+ pasid_set_flpm(pte, 1);
+ } else {
+ pr_err("VT-d has no 5-level paging support for CPU\n");
+ pasid_clear_entry(pte);
+ return -EINVAL;
+ }
+ }
#endif /* CONFIG_X86 */
pasid_set_domain_id(pte, did);
/* Setup Present and PASID Granular Transfer Type: */
pasid_set_translation_type(pte, 1);
pasid_set_present(pte);
-
- if (!ecap_coherent(iommu->ecap))
- clflush_cache_range(pte, sizeof(*pte));
-
- if (cap_caching_mode(iommu->cap)) {
- pasid_cache_invalidation_with_pasid(iommu, did, pasid);
- iotlb_invalidation_with_pasid(iommu, did, pasid);
- } else {
- iommu_flush_write_buffer(iommu);
- }
+ pasid_flush_caches(iommu, pte, pasid, did);
return 0;
}
*/
pasid_set_sre(pte);
pasid_set_present(pte);
-
- if (!ecap_coherent(iommu->ecap))
- clflush_cache_range(pte, sizeof(*pte));
-
- if (cap_caching_mode(iommu->cap)) {
- pasid_cache_invalidation_with_pasid(iommu, did, pasid);
- iotlb_invalidation_with_pasid(iommu, did, pasid);
- } else {
- iommu_flush_write_buffer(iommu);
- }
+ pasid_flush_caches(iommu, pte, pasid, did);
return 0;
}
*/
pasid_set_sre(pte);
pasid_set_present(pte);
-
- if (!ecap_coherent(iommu->ecap))
- clflush_cache_range(pte, sizeof(*pte));
-
- if (cap_caching_mode(iommu->cap)) {
- pasid_cache_invalidation_with_pasid(iommu, did, pasid);
- iotlb_invalidation_with_pasid(iommu, did, pasid);
- } else {
- iommu_flush_write_buffer(iommu);
- }
+ pasid_flush_caches(iommu, pte, pasid, did);
return 0;
}