drivers/gpu/drm/amd/amdkfd/kfd_kernel_queue_cik.c

   1 /*
   2  * Copyright 2014 Advanced Micro Devices, Inc.
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a
   5  * copy of this software and associated documentation files (the "Software"),
   6  * to deal in the Software without restriction, including without limitation
   7  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   8  * and/or sell copies of the Software, and to permit persons to whom the
   9  * Software is furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice shall be included in
  12  * all copies or substantial portions of the Software.
  13  *
  14  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  15  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  16  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  17  * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
  18  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  19  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
  20  * OTHER DEALINGS IN THE SOFTWARE.
  21  *
  22  */
  23
  24 #include "kfd_kernel_queue.h"
  25
  26 static bool initialize_cik(struct kernel_queue *kq, struct kfd_dev *dev,
  27                         enum kfd_queue_type type, unsigned int queue_size);
  28 static void uninitialize_cik(struct kernel_queue *kq);
  29 static void submit_packet_cik(struct kernel_queue *kq);
  30
  31 void kernel_queue_init_cik(struct kernel_queue_ops *ops)
  32 {
  33         ops->initialize = initialize_cik;
  34         ops->uninitialize = uninitialize_cik;
  35         ops->submit_packet = submit_packet_cik;
  36 }
  37
  38 static bool initialize_cik(struct kernel_queue *kq, struct kfd_dev *dev,
  39                         enum kfd_queue_type type, unsigned int queue_size)
  40 {
  41         return true;
  42 }
  43
  44 static void uninitialize_cik(struct kernel_queue *kq)
  45 {
  46 }
  47
  48 static void submit_packet_cik(struct kernel_queue *kq)
  49 {
  50         *kq->wptr_kernel = kq->pending_wptr;
  51         write_kernel_doorbell(kq->queue->properties.doorbell_ptr,
  52                                 kq->pending_wptr);
  53 }