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.h"
25 #include "umc_v6_7.h"
26 
27 static int amdgpu_umc_convert_error_address(struct amdgpu_device *adev,
28 				    struct ras_err_data *err_data, uint64_t err_addr,
29 				    uint32_t ch_inst, uint32_t umc_inst)
30 {
31 	switch (adev->ip_versions[UMC_HWIP][0]) {
32 	case IP_VERSION(6, 7, 0):
33 		umc_v6_7_convert_error_address(adev,
34 				err_data, err_addr, ch_inst, umc_inst);
35 		break;
36 	default:
37 		dev_warn(adev->dev,
38 			 "UMC address to Physical address translation is not supported\n");
39 		return AMDGPU_RAS_FAIL;
40 	}
41 
42 	return AMDGPU_RAS_SUCCESS;
43 }
44 
45 int amdgpu_umc_page_retirement_mca(struct amdgpu_device *adev,
46 			uint64_t err_addr, uint32_t ch_inst, uint32_t umc_inst)
47 {
48 	struct ras_err_data err_data = {0, 0, 0, NULL};
49 	int ret = AMDGPU_RAS_FAIL;
50 
51 	err_data.err_addr =
52 		kcalloc(adev->umc.max_ras_err_cnt_per_query,
53 			sizeof(struct eeprom_table_record), GFP_KERNEL);
54 	if (!err_data.err_addr) {
55 		dev_warn(adev->dev,
56 			"Failed to alloc memory for umc error record in MCA notifier!\n");
57 		return AMDGPU_RAS_FAIL;
58 	}
59 
60 	/*
61 	 * Translate UMC channel address to Physical address
62 	 */
63 	ret = amdgpu_umc_convert_error_address(adev, &err_data, err_addr,
64 					ch_inst, umc_inst);
65 	if (ret)
66 		goto out;
67 
68 	if (amdgpu_bad_page_threshold != 0) {
69 		amdgpu_ras_add_bad_pages(adev, err_data.err_addr,
70 						err_data.err_addr_cnt);
71 		amdgpu_ras_save_bad_pages(adev, NULL);
72 	}
73 
74 out:
75 	kfree(err_data.err_addr);
76 	return ret;
77 }
78 
79 static int amdgpu_umc_do_page_retirement(struct amdgpu_device *adev,
80 		void *ras_error_status,
81 		struct amdgpu_iv_entry *entry,
82 		bool reset)
83 {
84 	struct ras_err_data *err_data = (struct ras_err_data *)ras_error_status;
85 	struct amdgpu_ras *con = amdgpu_ras_get_context(adev);
86 	int ret = 0;
87 
88 	kgd2kfd_set_sram_ecc_flag(adev->kfd.dev);
89 	ret = amdgpu_dpm_get_ecc_info(adev, (void *)&(con->umc_ecc));
90 	if (ret == -EOPNOTSUPP) {
91 		if (adev->umc.ras && adev->umc.ras->ras_block.hw_ops &&
92 		    adev->umc.ras->ras_block.hw_ops->query_ras_error_count)
93 		    adev->umc.ras->ras_block.hw_ops->query_ras_error_count(adev, ras_error_status);
94 
95 		if (adev->umc.ras && adev->umc.ras->ras_block.hw_ops &&
96 		    adev->umc.ras->ras_block.hw_ops->query_ras_error_address &&
97 		    adev->umc.max_ras_err_cnt_per_query) {
98 			err_data->err_addr =
99 				kcalloc(adev->umc.max_ras_err_cnt_per_query,
100 					sizeof(struct eeprom_table_record), GFP_KERNEL);
101 
102 			/* still call query_ras_error_address to clear error status
103 			 * even NOMEM error is encountered
104 			 */
105 			if(!err_data->err_addr)
106 				dev_warn(adev->dev, "Failed to alloc memory for "
107 						"umc error address record!\n");
108 
109 			/* umc query_ras_error_address is also responsible for clearing
110 			 * error status
111 			 */
112 			adev->umc.ras->ras_block.hw_ops->query_ras_error_address(adev, ras_error_status);
113 		}
114 	} else if (!ret) {
115 		if (adev->umc.ras &&
116 		    adev->umc.ras->ecc_info_query_ras_error_count)
117 		    adev->umc.ras->ecc_info_query_ras_error_count(adev, ras_error_status);
118 
119 		if (adev->umc.ras &&
120 		    adev->umc.ras->ecc_info_query_ras_error_address &&
121 		    adev->umc.max_ras_err_cnt_per_query) {
122 			err_data->err_addr =
123 				kcalloc(adev->umc.max_ras_err_cnt_per_query,
124 					sizeof(struct eeprom_table_record), GFP_KERNEL);
125 
126 			/* still call query_ras_error_address to clear error status
127 			 * even NOMEM error is encountered
128 			 */
129 			if(!err_data->err_addr)
130 				dev_warn(adev->dev, "Failed to alloc memory for "
131 						"umc error address record!\n");
132 
133 			/* umc query_ras_error_address is also responsible for clearing
134 			 * error status
135 			 */
136 			adev->umc.ras->ecc_info_query_ras_error_address(adev, ras_error_status);
137 		}
138 	}
139 
140 	/* only uncorrectable error needs gpu reset */
141 	if (err_data->ue_count) {
142 		dev_info(adev->dev, "%ld uncorrectable hardware errors "
143 				"detected in UMC block\n",
144 				err_data->ue_count);
145 
146 		if ((amdgpu_bad_page_threshold != 0) &&
147 			err_data->err_addr_cnt) {
148 			amdgpu_ras_add_bad_pages(adev, err_data->err_addr,
149 						err_data->err_addr_cnt);
150 			amdgpu_ras_save_bad_pages(adev, &(err_data->ue_count));
151 
152 			amdgpu_dpm_send_hbm_bad_pages_num(adev, con->eeprom_control.ras_num_recs);
153 
154 			if (con->update_channel_flag == true) {
155 				amdgpu_dpm_send_hbm_bad_channel_flag(adev, con->eeprom_control.bad_channel_bitmap);
156 				con->update_channel_flag = false;
157 			}
158 		}
159 
160 		if (reset)
161 			amdgpu_ras_reset_gpu(adev);
162 	}
163 
164 	kfree(err_data->err_addr);
165 	return AMDGPU_RAS_SUCCESS;
166 }
167 
168 int amdgpu_umc_poison_handler(struct amdgpu_device *adev, bool reset)
169 {
170 	int ret = AMDGPU_RAS_SUCCESS;
171 
172 	if (!amdgpu_sriov_vf(adev)) {
173 		if (!adev->gmc.xgmi.connected_to_cpu) {
174 			struct ras_err_data err_data = {0, 0, 0, NULL};
175 			struct ras_common_if head = {
176 				.block = AMDGPU_RAS_BLOCK__UMC,
177 			};
178 			struct ras_manager *obj = amdgpu_ras_find_obj(adev, &head);
179 
180 			ret = amdgpu_umc_do_page_retirement(adev, &err_data, NULL, reset);
181 
182 			if (ret == AMDGPU_RAS_SUCCESS && obj) {
183 				obj->err_data.ue_count += err_data.ue_count;
184 				obj->err_data.ce_count += err_data.ce_count;
185 			}
186 		} else if (reset) {
187 			/* MCA poison handler is only responsible for GPU reset,
188 			 * let MCA notifier do page retirement.
189 			 */
190 			kgd2kfd_set_sram_ecc_flag(adev->kfd.dev);
191 			amdgpu_ras_reset_gpu(adev);
192 		}
193 	} else {
194 		if (adev->virt.ops && adev->virt.ops->ras_poison_handler)
195 			adev->virt.ops->ras_poison_handler(adev);
196 		else
197 			dev_warn(adev->dev,
198 				"No ras_poison_handler interface in SRIOV!\n");
199 	}
200 
201 	return ret;
202 }
203 
204 int amdgpu_umc_process_ras_data_cb(struct amdgpu_device *adev,
205 		void *ras_error_status,
206 		struct amdgpu_iv_entry *entry)
207 {
208 	return amdgpu_umc_do_page_retirement(adev, ras_error_status, entry, true);
209 }
210 
211 int amdgpu_umc_ras_sw_init(struct amdgpu_device *adev)
212 {
213 	int err;
214 	struct amdgpu_umc_ras *ras;
215 
216 	if (!adev->umc.ras)
217 		return 0;
218 
219 	ras = adev->umc.ras;
220 
221 	err = amdgpu_ras_register_ras_block(adev, &ras->ras_block);
222 	if (err) {
223 		dev_err(adev->dev, "Failed to register umc ras block!\n");
224 		return err;
225 	}
226 
227 	strcpy(adev->umc.ras->ras_block.ras_comm.name, "umc");
228 	ras->ras_block.ras_comm.block = AMDGPU_RAS_BLOCK__UMC;
229 	ras->ras_block.ras_comm.type = AMDGPU_RAS_ERROR__MULTI_UNCORRECTABLE;
230 	adev->umc.ras_if = &ras->ras_block.ras_comm;
231 
232 	if (!ras->ras_block.ras_late_init)
233 		ras->ras_block.ras_late_init = amdgpu_umc_ras_late_init;
234 
235 	if (!ras->ras_block.ras_cb)
236 		ras->ras_block.ras_cb = amdgpu_umc_process_ras_data_cb;
237 
238 	return 0;
239 }
240 
241 int amdgpu_umc_ras_late_init(struct amdgpu_device *adev, struct ras_common_if *ras_block)
242 {
243 	int r;
244 
245 	r = amdgpu_ras_block_late_init(adev, ras_block);
246 	if (r)
247 		return r;
248 
249 	if (amdgpu_ras_is_supported(adev, ras_block->block)) {
250 		r = amdgpu_irq_get(adev, &adev->gmc.ecc_irq, 0);
251 		if (r)
252 			goto late_fini;
253 	}
254 
255 	/* ras init of specific umc version */
256 	if (adev->umc.ras &&
257 	    adev->umc.ras->err_cnt_init)
258 		adev->umc.ras->err_cnt_init(adev);
259 
260 	return 0;
261 
262 late_fini:
263 	amdgpu_ras_block_late_fini(adev, ras_block);
264 	return r;
265 }
266 
267 int amdgpu_umc_process_ecc_irq(struct amdgpu_device *adev,
268 		struct amdgpu_irq_src *source,
269 		struct amdgpu_iv_entry *entry)
270 {
271 	struct ras_common_if *ras_if = adev->umc.ras_if;
272 	struct ras_dispatch_if ih_data = {
273 		.entry = entry,
274 	};
275 
276 	if (!ras_if)
277 		return 0;
278 
279 	ih_data.head = *ras_if;
280 
281 	amdgpu_ras_interrupt_dispatch(adev, &ih_data);
282 	return 0;
283 }
284 
285 void amdgpu_umc_fill_error_record(struct ras_err_data *err_data,
286 		uint64_t err_addr,
287 		uint64_t retired_page,
288 		uint32_t channel_index,
289 		uint32_t umc_inst)
290 {
291 	struct eeprom_table_record *err_rec =
292 		&err_data->err_addr[err_data->err_addr_cnt];
293 
294 	err_rec->address = err_addr;
295 	/* page frame address is saved */
296 	err_rec->retired_page = retired_page >> AMDGPU_GPU_PAGE_SHIFT;
297 	err_rec->ts = (uint64_t)ktime_get_real_seconds();
298 	err_rec->err_type = AMDGPU_RAS_EEPROM_ERR_NON_RECOVERABLE;
299 	err_rec->cu = 0;
300 	err_rec->mem_channel = channel_index;
301 	err_rec->mcumc_id = umc_inst;
302 
303 	err_data->err_addr_cnt++;
304 }
305 
306 int amdgpu_umc_loop_channels(struct amdgpu_device *adev,
307 			umc_func func, void *data)
308 {
309 	uint32_t node_inst       = 0;
310 	uint32_t umc_inst        = 0;
311 	uint32_t ch_inst         = 0;
312 	int ret = 0;
313 
314 	if (adev->umc.node_inst_num) {
315 		LOOP_UMC_EACH_NODE_INST_AND_CH(node_inst, umc_inst, ch_inst) {
316 			ret = func(adev, node_inst, umc_inst, ch_inst, data);
317 			if (ret) {
318 				dev_err(adev->dev, "Node %d umc %d ch %d func returns %d\n",
319 					node_inst, umc_inst, ch_inst, ret);
320 				return ret;
321 			}
322 		}
323 	} else {
324 		LOOP_UMC_INST_AND_CH(umc_inst, ch_inst) {
325 			ret = func(adev, 0, umc_inst, ch_inst, data);
326 			if (ret) {
327 				dev_err(adev->dev, "Umc %d ch %d func returns %d\n",
328 					umc_inst, ch_inst, ret);
329 				return ret;
330 			}
331 		}
332 	}
333 
334 	return 0;
335 }
336