diff options
Diffstat (limited to 'drivers/gpu/drm/amd/amdkfd/kfd_kernel_queue.h')
| -rw-r--r-- | drivers/gpu/drm/amd/amdkfd/kfd_kernel_queue.h | 86 |
1 files changed, 86 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_kernel_queue.h b/drivers/gpu/drm/amd/amdkfd/kfd_kernel_queue.h new file mode 100644 index 000000000..383202fd1 --- /dev/null +++ b/drivers/gpu/drm/amd/amdkfd/kfd_kernel_queue.h @@ -0,0 +1,86 @@ +/* SPDX-License-Identifier: GPL-2.0 OR MIT */ +/* + * Copyright 2014-2022 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. + * + */ + +#ifndef KFD_KERNEL_QUEUE_H_ +#define KFD_KERNEL_QUEUE_H_ + +#include <linux/list.h> +#include <linux/types.h> +#include "kfd_priv.h" + +/** + * kq_acquire_packet_buffer: Returns a pointer to the location in the kernel + * queue ring buffer where the calling function can write its packet. It is + * Guaranteed that there is enough space for that packet. It also updates the + * pending write pointer to that location so subsequent calls to + * acquire_packet_buffer will get a correct write pointer + * + * kq_submit_packet: Update the write pointer and doorbell of a kernel queue. + * + * kq_rollback_packet: This routine is called if we failed to build an acquired + * packet for some reason. It just overwrites the pending wptr with the current + * one + * + */ + +int kq_acquire_packet_buffer(struct kernel_queue *kq, + size_t packet_size_in_dwords, + unsigned int **buffer_ptr); +void kq_submit_packet(struct kernel_queue *kq); +void kq_rollback_packet(struct kernel_queue *kq); + + +struct kernel_queue { + /* data */ + struct kfd_dev *dev; + struct mqd_manager *mqd_mgr; + struct queue *queue; + uint64_t pending_wptr64; + uint32_t pending_wptr; + unsigned int nop_packet; + + struct kfd_mem_obj *rptr_mem; + uint32_t *rptr_kernel; + uint64_t rptr_gpu_addr; + struct kfd_mem_obj *wptr_mem; + union { + uint64_t *wptr64_kernel; + uint32_t *wptr_kernel; + }; + uint64_t wptr_gpu_addr; + struct kfd_mem_obj *pq; + uint64_t pq_gpu_addr; + uint32_t *pq_kernel_addr; + struct kfd_mem_obj *eop_mem; + uint64_t eop_gpu_addr; + uint32_t *eop_kernel_addr; + + struct kfd_mem_obj *fence_mem_obj; + uint64_t fence_gpu_addr; + void *fence_kernel_address; + + struct list_head list; +}; + +#endif /* KFD_KERNEL_QUEUE_H_ */ |