1 /*
2  * Copyright 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 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_ras.h"
25 
26 int amdgpu_umc_ras_late_init(struct amdgpu_device *adev)
27 {
28 	int r;
29 	struct ras_fs_if fs_info = {
30 		.sysfs_name = "umc_err_count",
31 	};
32 	struct ras_ih_if ih_info = {
33 		.cb = amdgpu_umc_process_ras_data_cb,
34 	};
35 
36 	if (!adev->umc.ras_if) {
37 		adev->umc.ras_if =
38 			kmalloc(sizeof(struct ras_common_if), GFP_KERNEL);
39 		if (!adev->umc.ras_if)
40 			return -ENOMEM;
41 		adev->umc.ras_if->block = AMDGPU_RAS_BLOCK__UMC;
42 		adev->umc.ras_if->type = AMDGPU_RAS_ERROR__MULTI_UNCORRECTABLE;
43 		adev->umc.ras_if->sub_block_index = 0;
44 		strcpy(adev->umc.ras_if->name, "umc");
45 	}
46 	ih_info.head = fs_info.head = *adev->umc.ras_if;
47 
48 	r = amdgpu_ras_late_init(adev, adev->umc.ras_if,
49 				 &fs_info, &ih_info);
50 	if (r)
51 		goto free;
52 
53 	if (amdgpu_ras_is_supported(adev, adev->umc.ras_if->block)) {
54 		r = amdgpu_irq_get(adev, &adev->gmc.ecc_irq, 0);
55 		if (r)
56 			goto late_fini;
57 	} else {
58 		r = 0;
59 		goto free;
60 	}
61 
62 	/* ras init of specific umc version */
63 	if (adev->umc.ras_funcs &&
64 	    adev->umc.ras_funcs->err_cnt_init)
65 		adev->umc.ras_funcs->err_cnt_init(adev);
66 
67 	return 0;
68 
69 late_fini:
70 	amdgpu_ras_late_fini(adev, adev->umc.ras_if, &ih_info);
71 free:
72 	kfree(adev->umc.ras_if);
73 	adev->umc.ras_if = NULL;
74 	return r;
75 }
76 
77 void amdgpu_umc_ras_fini(struct amdgpu_device *adev)
78 {
79 	if (amdgpu_ras_is_supported(adev, AMDGPU_RAS_BLOCK__UMC) &&
80 			adev->umc.ras_if) {
81 		struct ras_common_if *ras_if = adev->umc.ras_if;
82 		struct ras_ih_if ih_info = {
83 			.head = *ras_if,
84 			.cb = amdgpu_umc_process_ras_data_cb,
85 		};
86 
87 		amdgpu_ras_late_fini(adev, ras_if, &ih_info);
88 		kfree(ras_if);
89 	}
90 }
91 
92 int amdgpu_umc_process_ras_data_cb(struct amdgpu_device *adev,
93 		void *ras_error_status,
94 		struct amdgpu_iv_entry *entry)
95 {
96 	struct ras_err_data *err_data = (struct ras_err_data *)ras_error_status;
97 	struct amdgpu_ras *con = amdgpu_ras_get_context(adev);
98 
99 	kgd2kfd_set_sram_ecc_flag(adev->kfd.dev);
100 	if (adev->umc.ras_funcs &&
101 	    adev->umc.ras_funcs->query_ras_error_count)
102 	    adev->umc.ras_funcs->query_ras_error_count(adev, ras_error_status);
103 
104 	if (adev->umc.ras_funcs &&
105 	    adev->umc.ras_funcs->query_ras_error_address &&
106 	    adev->umc.max_ras_err_cnt_per_query) {
107 		err_data->err_addr =
108 			kcalloc(adev->umc.max_ras_err_cnt_per_query,
109 				sizeof(struct eeprom_table_record), GFP_KERNEL);
110 
111 		/* still call query_ras_error_address to clear error status
112 		 * even NOMEM error is encountered
113 		 */
114 		if(!err_data->err_addr)
115 			dev_warn(adev->dev, "Failed to alloc memory for "
116 					"umc error address record!\n");
117 
118 		/* umc query_ras_error_address is also responsible for clearing
119 		 * error status
120 		 */
121 		adev->umc.ras_funcs->query_ras_error_address(adev, ras_error_status);
122 	}
123 
124 	/* only uncorrectable error needs gpu reset */
125 	if (err_data->ue_count) {
126 		dev_info(adev->dev, "%ld uncorrectable hardware errors "
127 				"detected in UMC block\n",
128 				err_data->ue_count);
129 
130 		if ((amdgpu_bad_page_threshold != 0) &&
131 			err_data->err_addr_cnt) {
132 			amdgpu_ras_add_bad_pages(adev, err_data->err_addr,
133 						err_data->err_addr_cnt);
134 			amdgpu_ras_save_bad_pages(adev);
135 
136 			if (adev->smu.ppt_funcs && adev->smu.ppt_funcs->send_hbm_bad_pages_num)
137 				adev->smu.ppt_funcs->send_hbm_bad_pages_num(&adev->smu, con->eeprom_control.ras_num_recs);
138 		}
139 
140 		amdgpu_ras_reset_gpu(adev);
141 	}
142 
143 	kfree(err_data->err_addr);
144 	return AMDGPU_RAS_SUCCESS;
145 }
146 
147 int amdgpu_umc_process_ecc_irq(struct amdgpu_device *adev,
148 		struct amdgpu_irq_src *source,
149 		struct amdgpu_iv_entry *entry)
150 {
151 	struct ras_common_if *ras_if = adev->umc.ras_if;
152 	struct ras_dispatch_if ih_data = {
153 		.entry = entry,
154 	};
155 
156 	if (!ras_if)
157 		return 0;
158 
159 	ih_data.head = *ras_if;
160 
161 	amdgpu_ras_interrupt_dispatch(adev, &ih_data);
162 	return 0;
163 }
164