1 /*
2  * Copyright (C) 2019  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
12  * in all copies or substantial portions of the Software.
13  *
14  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
15  * OR 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) BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
18  * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
19  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
20  */
21 
22 #include "amdgpu.h"
23 #include "amdgpu_ras.h"
24 
25 int amdgpu_nbio_ras_late_init(struct amdgpu_device *adev)
26 {
27 	int r;
28 	struct ras_ih_if ih_info = {
29 		.cb = NULL,
30 	};
31 	struct ras_fs_if fs_info = {
32 		.sysfs_name = "pcie_bif_err_count",
33 	};
34 
35 	if (!adev->nbio.ras_if) {
36 		adev->nbio.ras_if = kmalloc(sizeof(struct ras_common_if), GFP_KERNEL);
37 		if (!adev->nbio.ras_if)
38 			return -ENOMEM;
39 		adev->nbio.ras_if->block = AMDGPU_RAS_BLOCK__PCIE_BIF;
40 		adev->nbio.ras_if->type = AMDGPU_RAS_ERROR__MULTI_UNCORRECTABLE;
41 		adev->nbio.ras_if->sub_block_index = 0;
42 		strcpy(adev->nbio.ras_if->name, "pcie_bif");
43 	}
44 	ih_info.head = fs_info.head = *adev->nbio.ras_if;
45 	r = amdgpu_ras_late_init(adev, adev->nbio.ras_if,
46 				 &fs_info, &ih_info);
47 	if (r)
48 		goto free;
49 
50 	if (amdgpu_ras_is_supported(adev, adev->nbio.ras_if->block)) {
51 		r = amdgpu_irq_get(adev, &adev->nbio.ras_controller_irq, 0);
52 		if (r)
53 			goto late_fini;
54 		r = amdgpu_irq_get(adev, &adev->nbio.ras_err_event_athub_irq, 0);
55 		if (r)
56 			goto late_fini;
57 	} else {
58 		r = 0;
59 		goto free;
60 	}
61 
62 	return 0;
63 late_fini:
64 	amdgpu_ras_late_fini(adev, adev->nbio.ras_if, &ih_info);
65 free:
66 	kfree(adev->nbio.ras_if);
67 	adev->nbio.ras_if = NULL;
68 	return r;
69 }
70 
71 void amdgpu_nbio_ras_fini(struct amdgpu_device *adev)
72 {
73 	if (amdgpu_ras_is_supported(adev, AMDGPU_RAS_BLOCK__PCIE_BIF) &&
74 			adev->nbio.ras_if) {
75 		struct ras_common_if *ras_if = adev->nbio.ras_if;
76 		struct ras_ih_if ih_info = {
77 			.cb = NULL,
78 		};
79 
80 		amdgpu_ras_late_fini(adev, ras_if, &ih_info);
81 		kfree(ras_if);
82 	}
83 }
84