diff options
Diffstat (limited to 'drivers/gpu/drm/amd/amdkfd/kfd_pasid.c')
| -rw-r--r-- | drivers/gpu/drm/amd/amdkfd/kfd_pasid.c | 84 |
1 files changed, 0 insertions, 84 deletions
diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_pasid.c b/drivers/gpu/drm/amd/amdkfd/kfd_pasid.c deleted file mode 100644 index 33b08ff00b50..000000000000 --- a/drivers/gpu/drm/amd/amdkfd/kfd_pasid.c +++ /dev/null @@ -1,84 +0,0 @@ -/* - * Copyright 2014 Advanced Micro Devices, Inc. - * - * Permission is hereby granted, free of charge, to any person obtaining a - * copy of this software and associated documentation files (the "Software"), - * to deal in the Software without restriction, including without limitation - * the rights to use, copy, modify, merge, publish, distribute, sublicense, - * and/or sell copies of the Software, and to permit persons to whom the - * Software is furnished to do so, subject to the following conditions: - * - * The above copyright notice and this permission notice shall be included in - * all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR - * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, - * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL - * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR - * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, - * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR - * OTHER DEALINGS IN THE SOFTWARE. - */ - -#include <linux/types.h> -#include "kfd_priv.h" -#include "amdgpu_ids.h" - -static unsigned int pasid_bits = 16; -static const struct kfd2kgd_calls *kfd2kgd; - -bool kfd_set_pasid_limit(unsigned int new_limit) -{ - if (new_limit < 2) - return false; - - if (new_limit < (1U << pasid_bits)) { - if (kfd2kgd) - /* We've already allocated user PASIDs, too late to - * change the limit - */ - return false; - - while (new_limit < (1U << pasid_bits)) - pasid_bits--; - } - - return true; -} - -unsigned int kfd_get_pasid_limit(void) -{ - return 1U << pasid_bits; -} - -unsigned int kfd_pasid_alloc(void) -{ - int r; - - /* Find the first best KFD device for calling KGD */ - if (!kfd2kgd) { - struct kfd_dev *dev = NULL; - unsigned int i = 0; - - while ((kfd_topology_enum_kfd_devices(i, &dev)) == 0) { - if (dev && dev->kfd2kgd) { - kfd2kgd = dev->kfd2kgd; - break; - } - i++; - } - - if (!kfd2kgd) - return false; - } - - r = amdgpu_pasid_alloc(pasid_bits); - - return r > 0 ? r : 0; -} - -void kfd_pasid_free(unsigned int pasid) -{ - if (kfd2kgd) - amdgpu_pasid_free(pasid); -} |
