Merge tag 'drm-amdkfd-next-2018-03-11' of git://people.freedesktop.org/~gabbayo/linux into drm-next

Major points for this pull request:
- Add dGPU support for amdkfd initialization code and queue handling. It's
  not complete support since the GPUVM part is missing (the under debate stuff).
- Enable PCIe atomics for dGPU if present
- Various adjustments to the amdgpu<-->amdkfd interface for dGPUs
- Refactor IOMMUv2 code to allow loading amdkfd without IOMMUv2 in the system
- Add HSA process eviction code in case of system memory pressure
- Various fixes and small changes

* tag 'drm-amdkfd-next-2018-03-11' of git://people.freedesktop.org/~gabbayo/linux: (24 commits)
  uapi: Fix type used in ioctl parameter structures
  drm/amdkfd: Implement KFD process eviction/restore
  drm/amdkfd: Add GPUVM virtual address space to PDD
  drm/amdkfd: Remove unaligned memory access
  drm/amdkfd: Centralize IOMMUv2 code and make it conditional
  drm/amdgpu: Add submit IB function for KFD
  drm/amdgpu: Add GPUVM memory management functions for KFD
  drm/amdgpu: add amdgpu_sync_clone
  drm/amdgpu: Update kgd2kfd_shared_resources for dGPU support
  drm/amdgpu: Add KFD eviction fence
  drm/amdgpu: Remove unused kfd2kgd interface
  drm/amdgpu: Fix wrong mask in get_atc_vmid_pasid_mapping_pasid
  drm/amdgpu: Fix header file dependencies
  drm/amdgpu: Replace kgd_mem with amdgpu_bo for kernel pinned gtt mem
  drm/amdgpu: remove useless BUG_ONs
  drm/amdgpu: Enable KFD initialization on dGPUs
  drm/amdkfd: Add dGPU device IDs and device info
  drm/amdkfd: Add dGPU support to kernel_queue_init
  drm/amdkfd: Add dGPU support to the MQD manager
  drm/amdkfd: Add dGPU support to the device queue manager
  ...

1 files changed, 54 insertions, 2 deletions

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_sync.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_sync.c
index df65c66dc956..2d6f5ec77a68 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_sync.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_sync.c
@@ -31,6 +31,7 @@
 #include <drm/drmP.h>
 #include "amdgpu.h"
 #include "amdgpu_trace.h"
+#include "amdgpu_amdkfd.h"
 
 struct amdgpu_sync_entry {
 	struct hlist_node	node;
@@ -85,11 +86,20 @@ static bool amdgpu_sync_same_dev(struct amdgpu_device *adev,
  */
 static void *amdgpu_sync_get_owner(struct dma_fence *f)
 {
-	struct drm_sched_fence *s_fence = to_drm_sched_fence(f);
+	struct drm_sched_fence *s_fence;
+	struct amdgpu_amdkfd_fence *kfd_fence;
+
+	if (!f)
+		return AMDGPU_FENCE_OWNER_UNDEFINED;
 
+	s_fence = to_drm_sched_fence(f);
 	if (s_fence)
 		return s_fence->owner;
 
+	kfd_fence = to_amdgpu_amdkfd_fence(f);
+	if (kfd_fence)
+		return AMDGPU_FENCE_OWNER_KFD;
+
 	return AMDGPU_FENCE_OWNER_UNDEFINED;
 }
 
@@ -204,11 +214,18 @@ int amdgpu_sync_resv(struct amdgpu_device *adev,
 	for (i = 0; i < flist->shared_count; ++i) {
 		f = rcu_dereference_protected(flist->shared[i],
 					      reservation_object_held(resv));
+		/* We only want to trigger KFD eviction fences on
+		 * evict or move jobs. Skip KFD fences otherwise.
+		 */
+		fence_owner = amdgpu_sync_get_owner(f);
+		if (fence_owner == AMDGPU_FENCE_OWNER_KFD &&
+		    owner != AMDGPU_FENCE_OWNER_UNDEFINED)
+			continue;
+
 		if (amdgpu_sync_same_dev(adev, f)) {
 			/* VM updates are only interesting
 			 * for other VM updates and moves.
 			 */
-			fence_owner = amdgpu_sync_get_owner(f);
 			if ((owner != AMDGPU_FENCE_OWNER_UNDEFINED) &&
 			    (fence_owner != AMDGPU_FENCE_OWNER_UNDEFINED) &&
 			    ((owner == AMDGPU_FENCE_OWNER_VM) !=
@@ -305,6 +322,41 @@ struct dma_fence *amdgpu_sync_get_fence(struct amdgpu_sync *sync, bool *explicit
 	return NULL;
 }
 
+/**
+ * amdgpu_sync_clone - clone a sync object
+ *
+ * @source: sync object to clone
+ * @clone: pointer to destination sync object
+ *
+ * Adds references to all unsignaled fences in @source to @clone. Also
+ * removes signaled fences from @source while at it.
+ */
+int amdgpu_sync_clone(struct amdgpu_sync *source, struct amdgpu_sync *clone)
+{
+	struct amdgpu_sync_entry *e;
+	struct hlist_node *tmp;
+	struct dma_fence *f;
+	int i, r;
+
+	hash_for_each_safe(source->fences, i, tmp, e, node) {
+		f = e->fence;
+		if (!dma_fence_is_signaled(f)) {
+			r = amdgpu_sync_fence(NULL, clone, f, e->explicit);
+			if (r)
+				return r;
+		} else {
+			hash_del(&e->node);
+			dma_fence_put(f);
+			kmem_cache_free(amdgpu_sync_slab, e);
+		}
+	}
+
+	dma_fence_put(clone->last_vm_update);
+	clone->last_vm_update = dma_fence_get(source->last_vm_update);
+
+	return 0;
+}
+
 int amdgpu_sync_wait(struct amdgpu_sync *sync, bool intr)
 {
 	struct amdgpu_sync_entry *e;