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ed6e6a34 BG |
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 | #ifndef KFD_KERNEL_QUEUE_H_ | |
25 | #define KFD_KERNEL_QUEUE_H_ | |
26 | ||
27 | #include <linux/list.h> | |
28 | #include <linux/types.h> | |
29 | #include "kfd_priv.h" | |
30 | ||
443fbd5f | 31 | /** |
a5a4d68c | 32 | * kq_acquire_packet_buffer: Returns a pointer to the location in the kernel |
443fbd5f OG |
33 | * queue ring buffer where the calling function can write its packet. It is |
34 | * Guaranteed that there is enough space for that packet. It also updates the | |
35 | * pending write pointer to that location so subsequent calls to | |
36 | * acquire_packet_buffer will get a correct write pointer | |
37 | * | |
a5a4d68c | 38 | * kq_submit_packet: Update the write pointer and doorbell of a kernel queue. |
443fbd5f | 39 | * |
a5a4d68c | 40 | * kq_rollback_packet: This routine is called if we failed to build an acquired |
443fbd5f OG |
41 | * packet for some reason. It just overwrites the pending wptr with the current |
42 | * one | |
43 | * | |
44 | */ | |
ed6e6a34 | 45 | |
a5a4d68c YZ |
46 | int kq_acquire_packet_buffer(struct kernel_queue *kq, |
47 | size_t packet_size_in_dwords, | |
48 | unsigned int **buffer_ptr); | |
49 | void kq_submit_packet(struct kernel_queue *kq); | |
50 | void kq_rollback_packet(struct kernel_queue *kq); | |
443fbd5f | 51 | |
ed6e6a34 | 52 | |
a5a4d68c | 53 | struct kernel_queue { |
ed6e6a34 BG |
54 | /* data */ |
55 | struct kfd_dev *dev; | |
8d5f3552 | 56 | struct mqd_manager *mqd_mgr; |
ed6e6a34 | 57 | struct queue *queue; |
9d7d0248 | 58 | uint64_t pending_wptr64; |
ed6e6a34 BG |
59 | uint32_t pending_wptr; |
60 | unsigned int nop_packet; | |
61 | ||
62 | struct kfd_mem_obj *rptr_mem; | |
63 | uint32_t *rptr_kernel; | |
64 | uint64_t rptr_gpu_addr; | |
65 | struct kfd_mem_obj *wptr_mem; | |
9d7d0248 FK |
66 | union { |
67 | uint64_t *wptr64_kernel; | |
68 | uint32_t *wptr_kernel; | |
69 | }; | |
ed6e6a34 BG |
70 | uint64_t wptr_gpu_addr; |
71 | struct kfd_mem_obj *pq; | |
72 | uint64_t pq_gpu_addr; | |
73 | uint32_t *pq_kernel_addr; | |
6898f0a5 BG |
74 | struct kfd_mem_obj *eop_mem; |
75 | uint64_t eop_gpu_addr; | |
76 | uint32_t *eop_kernel_addr; | |
ed6e6a34 BG |
77 | |
78 | struct kfd_mem_obj *fence_mem_obj; | |
79 | uint64_t fence_gpu_addr; | |
80 | void *fence_kernel_address; | |
81 | ||
82 | struct list_head list; | |
83 | }; | |
84 | ||
85 | #endif /* KFD_KERNEL_QUEUE_H_ */ |