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Merge tag 'ext4_for_linus_stable' of git://git.kernel.org/pub/scm/linux/kernel/git...
[linux.git] / drivers / gpu / drm / amd / amdgpu / amdgpu_sdma.c
1 /*
2  * Copyright 2018 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 "amdgpu.h"
25 #include "amdgpu_sdma.h"
26 #include "amdgpu_ras.h"
27
28 #define AMDGPU_CSA_SDMA_SIZE 64
29 /* SDMA CSA reside in the 3rd page of CSA */
30 #define AMDGPU_CSA_SDMA_OFFSET (4096 * 2)
31
32 /*
33  * GPU SDMA IP block helpers function.
34  */
35
36 struct amdgpu_sdma_instance *amdgpu_sdma_get_instance_from_ring(struct amdgpu_ring *ring)
37 {
38         struct amdgpu_device *adev = ring->adev;
39         int i;
40
41         for (i = 0; i < adev->sdma.num_instances; i++)
42                 if (ring == &adev->sdma.instance[i].ring ||
43                     ring == &adev->sdma.instance[i].page)
44                         return &adev->sdma.instance[i];
45
46         return NULL;
47 }
48
49 int amdgpu_sdma_get_index_from_ring(struct amdgpu_ring *ring, uint32_t *index)
50 {
51         struct amdgpu_device *adev = ring->adev;
52         int i;
53
54         for (i = 0; i < adev->sdma.num_instances; i++) {
55                 if (ring == &adev->sdma.instance[i].ring ||
56                         ring == &adev->sdma.instance[i].page) {
57                         *index = i;
58                         return 0;
59                 }
60         }
61
62         return -EINVAL;
63 }
64
65 uint64_t amdgpu_sdma_get_csa_mc_addr(struct amdgpu_ring *ring,
66                                      unsigned vmid)
67 {
68         struct amdgpu_device *adev = ring->adev;
69         uint64_t csa_mc_addr;
70         uint32_t index = 0;
71         int r;
72
73         /* don't enable OS preemption on SDMA under SRIOV */
74         if (amdgpu_sriov_vf(adev) || vmid == 0 || !amdgpu_mcbp)
75                 return 0;
76
77         r = amdgpu_sdma_get_index_from_ring(ring, &index);
78
79         if (r || index > 31)
80                 csa_mc_addr = 0;
81         else
82                 csa_mc_addr = amdgpu_csa_vaddr(adev) +
83                         AMDGPU_CSA_SDMA_OFFSET +
84                         index * AMDGPU_CSA_SDMA_SIZE;
85
86         return csa_mc_addr;
87 }
88
89 int amdgpu_sdma_ras_late_init(struct amdgpu_device *adev,
90                               struct ras_common_if *ras_block)
91 {
92         int r, i;
93
94         r = amdgpu_ras_block_late_init(adev, ras_block);
95         if (r)
96                 return r;
97
98         if (amdgpu_ras_is_supported(adev, ras_block->block)) {
99                 for (i = 0; i < adev->sdma.num_instances; i++) {
100                         r = amdgpu_irq_get(adev, &adev->sdma.ecc_irq,
101                                 AMDGPU_SDMA_IRQ_INSTANCE0 + i);
102                         if (r)
103                                 goto late_fini;
104                 }
105         }
106
107         return 0;
108
109 late_fini:
110         amdgpu_ras_block_late_fini(adev, ras_block);
111         return r;
112 }
113
114 int amdgpu_sdma_process_ras_data_cb(struct amdgpu_device *adev,
115                 void *err_data,
116                 struct amdgpu_iv_entry *entry)
117 {
118         kgd2kfd_set_sram_ecc_flag(adev->kfd.dev);
119         amdgpu_ras_reset_gpu(adev);
120
121         return AMDGPU_RAS_SUCCESS;
122 }
123
124 int amdgpu_sdma_process_ecc_irq(struct amdgpu_device *adev,
125                                       struct amdgpu_irq_src *source,
126                                       struct amdgpu_iv_entry *entry)
127 {
128         struct ras_common_if *ras_if = adev->sdma.ras_if;
129         struct ras_dispatch_if ih_data = {
130                 .entry = entry,
131         };
132
133         if (!ras_if)
134                 return 0;
135
136         ih_data.head = *ras_if;
137
138         amdgpu_ras_interrupt_dispatch(adev, &ih_data);
139         return 0;
140 }
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