1 files changed, 339 insertions, 0 deletions

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_umc.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_umc.c
new file mode 100644
index 000000000..db0d94ca4
--- /dev/null
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_umc.c
@@ -0,0 +1,339 @@
+/*
+ * Copyright 2019 Advanced Micro Devices, Inc.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ *
+ */
+
+#include "amdgpu.h"
+#include "umc_v6_7.h"
+
+static int amdgpu_umc_convert_error_address(struct amdgpu_device *adev,
+				    struct ras_err_data *err_data, uint64_t err_addr,
+				    uint32_t ch_inst, uint32_t umc_inst)
+{
+	switch (adev->ip_versions[UMC_HWIP][0]) {
+	case IP_VERSION(6, 7, 0):
+		umc_v6_7_convert_error_address(adev,
+				err_data, err_addr, ch_inst, umc_inst);
+		break;
+	default:
+		dev_warn(adev->dev,
+			 "UMC address to Physical address translation is not supported\n");
+		return AMDGPU_RAS_FAIL;
+	}
+
+	return AMDGPU_RAS_SUCCESS;
+}
+
+int amdgpu_umc_page_retirement_mca(struct amdgpu_device *adev,
+			uint64_t err_addr, uint32_t ch_inst, uint32_t umc_inst)
+{
+	struct ras_err_data err_data = {0, 0, 0, NULL};
+	int ret = AMDGPU_RAS_FAIL;
+
+	err_data.err_addr =
+		kcalloc(adev->umc.max_ras_err_cnt_per_query,
+			sizeof(struct eeprom_table_record), GFP_KERNEL);
+	if (!err_data.err_addr) {
+		dev_warn(adev->dev,
+			"Failed to alloc memory for umc error record in MCA notifier!\n");
+		return AMDGPU_RAS_FAIL;
+	}
+
+	/*
+	 * Translate UMC channel address to Physical address
+	 */
+	ret = amdgpu_umc_convert_error_address(adev, &err_data, err_addr,
+					ch_inst, umc_inst);
+	if (ret)
+		goto out;
+
+	if (amdgpu_bad_page_threshold != 0) {
+		amdgpu_ras_add_bad_pages(adev, err_data.err_addr,
+						err_data.err_addr_cnt);
+		amdgpu_ras_save_bad_pages(adev, NULL);
+	}
+
+out:
+	kfree(err_data.err_addr);
+	return ret;
+}
+
+static int amdgpu_umc_do_page_retirement(struct amdgpu_device *adev,
+		void *ras_error_status,
+		struct amdgpu_iv_entry *entry,
+		bool reset)
+{
+	struct ras_err_data *err_data = (struct ras_err_data *)ras_error_status;
+	struct amdgpu_ras *con = amdgpu_ras_get_context(adev);
+	int ret = 0;
+
+	kgd2kfd_set_sram_ecc_flag(adev->kfd.dev);
+	ret = amdgpu_dpm_get_ecc_info(adev, (void *)&(con->umc_ecc));
+	if (ret == -EOPNOTSUPP) {
+		if (adev->umc.ras && adev->umc.ras->ras_block.hw_ops &&
+		    adev->umc.ras->ras_block.hw_ops->query_ras_error_count)
+		    adev->umc.ras->ras_block.hw_ops->query_ras_error_count(adev, ras_error_status);
+
+		if (adev->umc.ras && adev->umc.ras->ras_block.hw_ops &&
+		    adev->umc.ras->ras_block.hw_ops->query_ras_error_address &&
+		    adev->umc.max_ras_err_cnt_per_query) {
+			err_data->err_addr =
+				kcalloc(adev->umc.max_ras_err_cnt_per_query,
+					sizeof(struct eeprom_table_record), GFP_KERNEL);
+
+			/* still call query_ras_error_address to clear error status
+			 * even NOMEM error is encountered
+			 */
+			if(!err_data->err_addr)
+				dev_warn(adev->dev, "Failed to alloc memory for "
+						"umc error address record!\n");
+
+			/* umc query_ras_error_address is also responsible for clearing
+			 * error status
+			 */
+			adev->umc.ras->ras_block.hw_ops->query_ras_error_address(adev, ras_error_status);
+		}
+	} else if (!ret) {
+		if (adev->umc.ras &&
+		    adev->umc.ras->ecc_info_query_ras_error_count)
+		    adev->umc.ras->ecc_info_query_ras_error_count(adev, ras_error_status);
+
+		if (adev->umc.ras &&
+		    adev->umc.ras->ecc_info_query_ras_error_address &&
+		    adev->umc.max_ras_err_cnt_per_query) {
+			err_data->err_addr =
+				kcalloc(adev->umc.max_ras_err_cnt_per_query,
+					sizeof(struct eeprom_table_record), GFP_KERNEL);
+
+			/* still call query_ras_error_address to clear error status
+			 * even NOMEM error is encountered
+			 */
+			if(!err_data->err_addr)
+				dev_warn(adev->dev, "Failed to alloc memory for "
+						"umc error address record!\n");
+
+			/* umc query_ras_error_address is also responsible for clearing
+			 * error status
+			 */
+			adev->umc.ras->ecc_info_query_ras_error_address(adev, ras_error_status);
+		}
+	}
+
+	/* only uncorrectable error needs gpu reset */
+	if (err_data->ue_count) {
+		dev_info(adev->dev, "%ld uncorrectable hardware errors "
+				"detected in UMC block\n",
+				err_data->ue_count);
+
+		if ((amdgpu_bad_page_threshold != 0) &&
+			err_data->err_addr_cnt) {
+			amdgpu_ras_add_bad_pages(adev, err_data->err_addr,
+						err_data->err_addr_cnt);
+			amdgpu_ras_save_bad_pages(adev, &(err_data->ue_count));
+
+			amdgpu_dpm_send_hbm_bad_pages_num(adev, con->eeprom_control.ras_num_recs);
+
+			if (con->update_channel_flag == true) {
+				amdgpu_dpm_send_hbm_bad_channel_flag(adev, con->eeprom_control.bad_channel_bitmap);
+				con->update_channel_flag = false;
+			}
+		}
+
+		if (reset)
+			amdgpu_ras_reset_gpu(adev);
+	}
+
+	kfree(err_data->err_addr);
+	return AMDGPU_RAS_SUCCESS;
+}
+
+int amdgpu_umc_poison_handler(struct amdgpu_device *adev, bool reset)
+{
+	int ret = AMDGPU_RAS_SUCCESS;
+
+	if (adev->gmc.xgmi.connected_to_cpu ||
+		adev->gmc.is_app_apu) {
+		if (reset) {
+			/* MCA poison handler is only responsible for GPU reset,
+			 * let MCA notifier do page retirement.
+			 */
+			kgd2kfd_set_sram_ecc_flag(adev->kfd.dev);
+			amdgpu_ras_reset_gpu(adev);
+		}
+		return ret;
+	}
+
+	if (!amdgpu_sriov_vf(adev)) {
+		struct ras_err_data err_data = {0, 0, 0, NULL};
+		struct ras_common_if head = {
+			.block = AMDGPU_RAS_BLOCK__UMC,
+		};
+		struct ras_manager *obj = amdgpu_ras_find_obj(adev, &head);
+
+		ret = amdgpu_umc_do_page_retirement(adev, &err_data, NULL, reset);
+
+		if (ret == AMDGPU_RAS_SUCCESS && obj) {
+			obj->err_data.ue_count += err_data.ue_count;
+			obj->err_data.ce_count += err_data.ce_count;
+		}
+	} else {
+		if (adev->virt.ops && adev->virt.ops->ras_poison_handler)
+			adev->virt.ops->ras_poison_handler(adev);
+		else
+			dev_warn(adev->dev,
+				"No ras_poison_handler interface in SRIOV!\n");
+	}
+
+	return ret;
+}
+
+int amdgpu_umc_process_ras_data_cb(struct amdgpu_device *adev,
+		void *ras_error_status,
+		struct amdgpu_iv_entry *entry)
+{
+	return amdgpu_umc_do_page_retirement(adev, ras_error_status, entry, true);
+}
+
+int amdgpu_umc_ras_sw_init(struct amdgpu_device *adev)
+{
+	int err;
+	struct amdgpu_umc_ras *ras;
+
+	if (!adev->umc.ras)
+		return 0;
+
+	ras = adev->umc.ras;
+
+	err = amdgpu_ras_register_ras_block(adev, &ras->ras_block);
+	if (err) {
+		dev_err(adev->dev, "Failed to register umc ras block!\n");
+		return err;
+	}
+
+	strcpy(adev->umc.ras->ras_block.ras_comm.name, "umc");
+	ras->ras_block.ras_comm.block = AMDGPU_RAS_BLOCK__UMC;
+	ras->ras_block.ras_comm.type = AMDGPU_RAS_ERROR__MULTI_UNCORRECTABLE;
+	adev->umc.ras_if = &ras->ras_block.ras_comm;
+
+	if (!ras->ras_block.ras_late_init)
+		ras->ras_block.ras_late_init = amdgpu_umc_ras_late_init;
+
+	if (!ras->ras_block.ras_cb)
+		ras->ras_block.ras_cb = amdgpu_umc_process_ras_data_cb;
+
+	return 0;
+}
+
+int amdgpu_umc_ras_late_init(struct amdgpu_device *adev, struct ras_common_if *ras_block)
+{
+	int r;
+
+	r = amdgpu_ras_block_late_init(adev, ras_block);
+	if (r)
+		return r;
+
+	if (amdgpu_ras_is_supported(adev, ras_block->block)) {
+		r = amdgpu_irq_get(adev, &adev->gmc.ecc_irq, 0);
+		if (r)
+			goto late_fini;
+	}
+
+	/* ras init of specific umc version */
+	if (adev->umc.ras &&
+	    adev->umc.ras->err_cnt_init)
+		adev->umc.ras->err_cnt_init(adev);
+
+	return 0;
+
+late_fini:
+	amdgpu_ras_block_late_fini(adev, ras_block);
+	return r;
+}
+
+int amdgpu_umc_process_ecc_irq(struct amdgpu_device *adev,
+		struct amdgpu_irq_src *source,
+		struct amdgpu_iv_entry *entry)
+{
+	struct ras_common_if *ras_if = adev->umc.ras_if;
+	struct ras_dispatch_if ih_data = {
+		.entry = entry,
+	};
+
+	if (!ras_if)
+		return 0;
+
+	ih_data.head = *ras_if;
+
+	amdgpu_ras_interrupt_dispatch(adev, &ih_data);
+	return 0;
+}
+
+void amdgpu_umc_fill_error_record(struct ras_err_data *err_data,
+		uint64_t err_addr,
+		uint64_t retired_page,
+		uint32_t channel_index,
+		uint32_t umc_inst)
+{
+	struct eeprom_table_record *err_rec =
+		&err_data->err_addr[err_data->err_addr_cnt];
+
+	err_rec->address = err_addr;
+	/* page frame address is saved */
+	err_rec->retired_page = retired_page >> AMDGPU_GPU_PAGE_SHIFT;
+	err_rec->ts = (uint64_t)ktime_get_real_seconds();
+	err_rec->err_type = AMDGPU_RAS_EEPROM_ERR_NON_RECOVERABLE;
+	err_rec->cu = 0;
+	err_rec->mem_channel = channel_index;
+	err_rec->mcumc_id = umc_inst;
+
+	err_data->err_addr_cnt++;
+}
+
+int amdgpu_umc_loop_channels(struct amdgpu_device *adev,
+			umc_func func, void *data)
+{
+	uint32_t node_inst       = 0;
+	uint32_t umc_inst        = 0;
+	uint32_t ch_inst         = 0;
+	int ret = 0;
+
+	if (adev->umc.node_inst_num) {
+		LOOP_UMC_EACH_NODE_INST_AND_CH(node_inst, umc_inst, ch_inst) {
+			ret = func(adev, node_inst, umc_inst, ch_inst, data);
+			if (ret) {
+				dev_err(adev->dev, "Node %d umc %d ch %d func returns %d\n",
+					node_inst, umc_inst, ch_inst, ret);
+				return ret;
+			}
+		}
+	} else {
+		LOOP_UMC_INST_AND_CH(umc_inst, ch_inst) {
+			ret = func(adev, 0, umc_inst, ch_inst, data);
+			if (ret) {
+				dev_err(adev->dev, "Umc %d ch %d func returns %d\n",
+					umc_inst, ch_inst, ret);
+				return ret;
+			}
+		}
+	}
+
+	return 0;
+}