[PATCH 2/6] drm/amdgpu: add reserved vmid field in vm struct v2

[Chunming Zhou]

v2: rename dedicated_vmid to reserved_vmid

Change-Id: Id728e20366c8a1ae90d4e901dc80e136e2a613bb
Signed-off-by: Chunming Zhou <david1.z...@amd.com>
Reviewed-by: Junwei Zhang <jerry.zh...@amd.com>
Reviewed-by: Christian König <christian.koe...@amd.com>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c | 17 ++++++++++++++++-
 drivers/gpu/drm/amd/amdgpu/amdgpu_vm.h |  2 ++
 2 files changed, 18 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c 
b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
index 8698177..261aaea 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
@@ -2163,10 +2163,12 @@ int amdgpu_vm_init(struct amdgpu_device *adev, struct 
amdgpu_vm *vm,
        unsigned ring_instance;
        struct amdgpu_ring *ring;
        struct amd_sched_rq *rq;
-       int r;
+       int r, i;
 
        vm->va = RB_ROOT;
        vm->client_id = atomic64_inc_return(&adev->vm_manager.client_counter);
+       for (i = 0; i < AMDGPU_MAX_VMHUBS; i++)
+               vm->reserved_vmid[i] = NULL;
        spin_lock_init(&vm->status_lock);
        INIT_LIST_HEAD(&vm->invalidated);
        INIT_LIST_HEAD(&vm->cleared);
@@ -2270,6 +2272,7 @@ void amdgpu_vm_fini(struct amdgpu_device *adev, struct 
amdgpu_vm *vm)
 {
        struct amdgpu_bo_va_mapping *mapping, *tmp;
        bool prt_fini_needed = !!adev->gart.gart_funcs->set_prt;
+       int i;
 
        if (vm->is_kfd_vm) {
                struct amdgpu_vm_id_manager *id_mgr =
@@ -2313,6 +2316,18 @@ void amdgpu_vm_fini(struct amdgpu_device *adev, struct 
amdgpu_vm *vm)
 
        amdgpu_vm_free_levels(&vm->root);
        fence_put(vm->last_dir_update);
+       for (i = 0; i < AMDGPU_MAX_VMHUBS; i++) {
+               struct amdgpu_vm_id_manager *id_mgr =
+                       &adev->vm_manager.id_mgr[i];
+
+               mutex_lock(&id_mgr->lock);
+               if (vm->reserved_vmid[i]) {
+                       list_add(&vm->reserved_vmid[i]->list,
+                                &id_mgr->ids_lru);
+                       vm->reserved_vmid[i] = NULL;
+               }
+               mutex_unlock(&id_mgr->lock);
+       }
 }
 
 /**
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.h 
b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.h
index 16e0aaa..8eedca1 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.h
@@ -123,6 +123,8 @@ struct amdgpu_vm {
 
        /* client id */
        u64                     client_id;
+       /* dedicated to vm */
+       struct amdgpu_vm_id     *reserved_vmid[AMDGPU_MAX_VMHUBS];
        /* each VM will map on CSA */
        struct amdgpu_bo_va *csa_bo_va;
 
-- 
1.9.1

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