diff options
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_ids.c')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu_ids.c | 66 |
1 files changed, 40 insertions, 26 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ids.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ids.c index 5dd78a9cb12d..3ef5bc95642c 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ids.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ids.c @@ -275,13 +275,12 @@ static int amdgpu_vmid_grab_reserved(struct amdgpu_vm *vm, { struct amdgpu_device *adev = ring->adev; unsigned vmhub = ring->vm_hub; - struct amdgpu_vmid_mgr *id_mgr = &adev->vm_manager.id_mgr[vmhub]; uint64_t fence_context = adev->fence_context + ring->idx; bool needs_flush = vm->use_cpu_for_update; uint64_t updates = amdgpu_vm_tlb_seq(vm); int r; - *id = id_mgr->reserved; + *id = vm->reserved_vmid[vmhub]; if ((*id)->owner != vm->immediate.fence_context || !amdgpu_vmid_compatible(*id, job) || (*id)->flushed_updates < updates || @@ -474,40 +473,61 @@ bool amdgpu_vmid_uses_reserved(struct amdgpu_vm *vm, unsigned int vmhub) return vm->reserved_vmid[vmhub]; } -int amdgpu_vmid_alloc_reserved(struct amdgpu_device *adev, +/* + * amdgpu_vmid_alloc_reserved - reserve a specific VMID for this vm + * @adev: amdgpu device structure + * @vm: the VM to reserve an ID for + * @vmhub: the VMHUB which should be used + * + * Mostly used to have a reserved VMID for debugging and SPM. + * + * Returns: 0 for success, -ENOENT if an ID is already reserved. + */ +int amdgpu_vmid_alloc_reserved(struct amdgpu_device *adev, struct amdgpu_vm *vm, unsigned vmhub) { struct amdgpu_vmid_mgr *id_mgr = &adev->vm_manager.id_mgr[vmhub]; + struct amdgpu_vmid *id; + int r = 0; mutex_lock(&id_mgr->lock); - - ++id_mgr->reserved_use_count; - if (!id_mgr->reserved) { - struct amdgpu_vmid *id; - - id = list_first_entry(&id_mgr->ids_lru, struct amdgpu_vmid, - list); - /* Remove from normal round robin handling */ - list_del_init(&id->list); - id_mgr->reserved = id; + if (vm->reserved_vmid[vmhub]) + goto unlock; + if (id_mgr->reserved_vmid) { + r = -ENOENT; + goto unlock; } - + /* Remove from normal round robin handling */ + id = list_first_entry(&id_mgr->ids_lru, struct amdgpu_vmid, list); + list_del_init(&id->list); + vm->reserved_vmid[vmhub] = id; + id_mgr->reserved_vmid = true; mutex_unlock(&id_mgr->lock); + return 0; +unlock: + mutex_unlock(&id_mgr->lock); + return r; } -void amdgpu_vmid_free_reserved(struct amdgpu_device *adev, +/* + * amdgpu_vmid_free_reserved - free up a reserved VMID again + * @adev: amdgpu device structure + * @vm: the VM with the reserved ID + * @vmhub: the VMHUB which should be used + */ +void amdgpu_vmid_free_reserved(struct amdgpu_device *adev, struct amdgpu_vm *vm, unsigned vmhub) { struct amdgpu_vmid_mgr *id_mgr = &adev->vm_manager.id_mgr[vmhub]; mutex_lock(&id_mgr->lock); - if (!--id_mgr->reserved_use_count) { - /* give the reserved ID back to normal round robin */ - list_add(&id_mgr->reserved->list, &id_mgr->ids_lru); - id_mgr->reserved = NULL; + if (vm->reserved_vmid[vmhub]) { + list_add(&vm->reserved_vmid[vmhub]->list, + &id_mgr->ids_lru); + vm->reserved_vmid[vmhub] = NULL; + id_mgr->reserved_vmid = false; } - mutex_unlock(&id_mgr->lock); } @@ -574,7 +594,6 @@ void amdgpu_vmid_mgr_init(struct amdgpu_device *adev) mutex_init(&id_mgr->lock); INIT_LIST_HEAD(&id_mgr->ids_lru); - id_mgr->reserved_use_count = 0; /* for GC <10, SDMA uses MMHUB so use first_kfd_vmid for both GC and MM */ if (amdgpu_ip_version(adev, GC_HWIP, 0) < IP_VERSION(10, 0, 0)) @@ -594,11 +613,6 @@ void amdgpu_vmid_mgr_init(struct amdgpu_device *adev) list_add_tail(&id_mgr->ids[j].list, &id_mgr->ids_lru); } } - /* alloc a default reserved vmid to enforce isolation */ - for (i = 0; i < (adev->xcp_mgr ? adev->xcp_mgr->num_xcps : 1); i++) { - if (adev->enforce_isolation[i] != AMDGPU_ENFORCE_ISOLATION_DISABLE) - amdgpu_vmid_alloc_reserved(adev, AMDGPU_GFXHUB(i)); - } } /** |