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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 OG |
31 | /** |
32 | * struct kernel_queue_ops | |
33 | * | |
34 | * @initialize: Initialize a kernel queue, including allocations of GART memory | |
35 | * needed for the queue. | |
36 | * | |
37 | * @uninitialize: Uninitialize a kernel queue and free all its memory usages. | |
38 | * | |
39 | * @acquire_packet_buffer: Returns a pointer to the location in the kernel | |
40 | * queue ring buffer where the calling function can write its packet. It is | |
41 | * Guaranteed that there is enough space for that packet. It also updates the | |
42 | * pending write pointer to that location so subsequent calls to | |
43 | * acquire_packet_buffer will get a correct write pointer | |
44 | * | |
45 | * @submit_packet: Update the write pointer and doorbell of a kernel queue. | |
46 | * | |
47 | * @sync_with_hw: Wait until the write pointer and the read pointer of a kernel | |
48 | * queue are equal, which means the CP has read all the submitted packets. | |
49 | * | |
50 | * @rollback_packet: This routine is called if we failed to build an acquired | |
51 | * packet for some reason. It just overwrites the pending wptr with the current | |
52 | * one | |
53 | * | |
54 | */ | |
55 | struct kernel_queue_ops { | |
ed6e6a34 BG |
56 | bool (*initialize)(struct kernel_queue *kq, struct kfd_dev *dev, |
57 | enum kfd_queue_type type, unsigned int queue_size); | |
58 | void (*uninitialize)(struct kernel_queue *kq); | |
59 | int (*acquire_packet_buffer)(struct kernel_queue *kq, | |
60 | size_t packet_size_in_dwords, | |
61 | unsigned int **buffer_ptr); | |
62 | ||
63 | void (*submit_packet)(struct kernel_queue *kq); | |
ed6e6a34 | 64 | void (*rollback_packet)(struct kernel_queue *kq); |
443fbd5f OG |
65 | }; |
66 | ||
67 | struct kernel_queue { | |
68 | struct kernel_queue_ops ops; | |
6898f0a5 | 69 | struct kernel_queue_ops ops_asic_specific; |
ed6e6a34 BG |
70 | |
71 | /* data */ | |
72 | struct kfd_dev *dev; | |
73 | struct mqd_manager *mqd; | |
74 | struct queue *queue; | |
75 | uint32_t pending_wptr; | |
76 | unsigned int nop_packet; | |
77 | ||
78 | struct kfd_mem_obj *rptr_mem; | |
79 | uint32_t *rptr_kernel; | |
80 | uint64_t rptr_gpu_addr; | |
81 | struct kfd_mem_obj *wptr_mem; | |
82 | uint32_t *wptr_kernel; | |
83 | uint64_t wptr_gpu_addr; | |
84 | struct kfd_mem_obj *pq; | |
85 | uint64_t pq_gpu_addr; | |
86 | uint32_t *pq_kernel_addr; | |
6898f0a5 BG |
87 | struct kfd_mem_obj *eop_mem; |
88 | uint64_t eop_gpu_addr; | |
89 | uint32_t *eop_kernel_addr; | |
ed6e6a34 BG |
90 | |
91 | struct kfd_mem_obj *fence_mem_obj; | |
92 | uint64_t fence_gpu_addr; | |
93 | void *fence_kernel_address; | |
94 | ||
95 | struct list_head list; | |
96 | }; | |
97 | ||
6898f0a5 BG |
98 | void kernel_queue_init_cik(struct kernel_queue_ops *ops); |
99 | void kernel_queue_init_vi(struct kernel_queue_ops *ops); | |
100 | ||
ed6e6a34 | 101 | #endif /* KFD_KERNEL_QUEUE_H_ */ |