1 // SPDX-License-Identifier: GPL-2.0-only
11 #define EDAC_MOD_NAME			"npcm-edac"
46 	/* memory controller registers */
106 	struct priv_data *priv = mci->pvt_info;  in handle_ce()
111 	pdata = priv->pdata;  in handle_ce()
112 	regmap_read(npcm_regmap, pdata->ctl_ce_addr_l, &val_l);  in handle_ce()
113 	if (pdata->chip == NPCM8XX_CHIP) {  in handle_ce()
114 		regmap_read(npcm_regmap, pdata->ctl_ce_addr_h, &val_h);  in handle_ce()
115 		val_h &= pdata->ce_addr_h_mask;  in handle_ce()
119 	regmap_read(npcm_regmap, pdata->ctl_ce_data_l, &val_l);  in handle_ce()
120 	if (pdata->chip == NPCM8XX_CHIP)  in handle_ce()
121 		regmap_read(npcm_regmap, pdata->ctl_ce_data_h, &val_h);  in handle_ce()
124 	regmap_read(npcm_regmap, pdata->ctl_source_id, &id);  in handle_ce()
125 	id = (id & pdata->source_id_ce_mask) >> pdata->source_id_ce_shift;  in handle_ce()
127 	regmap_read(npcm_regmap, pdata->ctl_ce_synd, &synd);  in handle_ce()
128 	synd = (synd & pdata->ce_synd_mask) >> pdata->ce_synd_shift;  in handle_ce()
130 	snprintf(priv->message, EDAC_MSG_SIZE,  in handle_ce()
134 			     addr & ~PAGE_MASK, synd, 0, 0, -1, priv->message, "");  in handle_ce()
139 	struct priv_data *priv = mci->pvt_info;  in handle_ue()
144 	pdata = priv->pdata;  in handle_ue()
145 	regmap_read(npcm_regmap, pdata->ctl_ue_addr_l, &val_l);  in handle_ue()
146 	if (pdata->chip == NPCM8XX_CHIP) {  in handle_ue()
147 		regmap_read(npcm_regmap, pdata->ctl_ue_addr_h, &val_h);  in handle_ue()
148 		val_h &= pdata->ue_addr_h_mask;  in handle_ue()
152 	regmap_read(npcm_regmap, pdata->ctl_ue_data_l, &val_l);  in handle_ue()
153 	if (pdata->chip == NPCM8XX_CHIP)  in handle_ue()
154 		regmap_read(npcm_regmap, pdata->ctl_ue_data_h, &val_h);  in handle_ue()
157 	regmap_read(npcm_regmap, pdata->ctl_source_id, &id);  in handle_ue()
158 	id = (id & pdata->source_id_ue_mask) >> pdata->source_id_ue_shift;  in handle_ue()
160 	regmap_read(npcm_regmap, pdata->ctl_ue_synd, &synd);  in handle_ue()
161 	synd = (synd & pdata->ue_synd_mask) >> pdata->ue_synd_shift;  in handle_ue()
163 	snprintf(priv->message, EDAC_MSG_SIZE,  in handle_ue()
167 			     addr & ~PAGE_MASK, synd, 0, 0, -1, priv->message, "");  in handle_ue()
176 	pdata = ((struct priv_data *)mci->pvt_info)->pdata;  in edac_ecc_isr()
177 	regmap_read(npcm_regmap, pdata->ctl_int_status, &status);  in edac_ecc_isr()
178 	if (status & pdata->int_status_ce_mask) {  in edac_ecc_isr()
182 		regmap_write(npcm_regmap, pdata->ctl_int_ack,  in edac_ecc_isr()
183 			     pdata->int_ack_ce_mask);  in edac_ecc_isr()
185 	} else if (status & pdata->int_status_ue_mask) {  in edac_ecc_isr()
189 		regmap_write(npcm_regmap, pdata->ctl_int_ack,  in edac_ecc_isr()
190 			     pdata->int_ack_ue_mask);  in edac_ecc_isr()
201 	struct device *dev = file->private_data;  in force_ecc_error()
203 	struct priv_data *priv = mci->pvt_info;  in force_ecc_error()
208 	pdata = priv->pdata;  in force_ecc_error()
211 		    priv->error_type, priv->location, priv->bit);  in force_ecc_error()
214 	ret = regmap_read_poll_timeout(npcm_regmap, pdata->ctl_controller_busy,  in force_ecc_error()
215 				       val, !(val & pdata->controller_busy_mask),  in force_ecc_error()
223 	regmap_read(npcm_regmap, pdata->ctl_xor_check_bits, &val);  in force_ecc_error()
224 	val &= ~pdata->xor_check_bits_mask;  in force_ecc_error()
227 	if (priv->error_type == ERROR_TYPE_CORRECTABLE) {  in force_ecc_error()
228 		if (priv->location == ERROR_LOCATION_DATA &&  in force_ecc_error()
229 		    priv->bit > ERROR_BIT_DATA_MAX) {  in force_ecc_error()
232 				    ERROR_BIT_DATA_MAX, priv->bit);  in force_ecc_error()
236 		if (priv->location == ERROR_LOCATION_CHECKCODE &&  in force_ecc_error()
237 		    priv->bit > ERROR_BIT_CHECKCODE_MAX) {  in force_ecc_error()
240 				    ERROR_BIT_CHECKCODE_MAX, priv->bit);  in force_ecc_error()
244 		syndrome = priv->location ? 1 << priv->bit  in force_ecc_error()
245 					  : data_synd[priv->bit];  in force_ecc_error()
247 		regmap_write(npcm_regmap, pdata->ctl_xor_check_bits,  in force_ecc_error()
248 			     val | (syndrome << pdata->xor_check_bits_shift) |  in force_ecc_error()
249 			     pdata->writeback_en_mask);  in force_ecc_error()
250 	} else if (priv->error_type == ERROR_TYPE_UNCORRECTABLE) {  in force_ecc_error()
251 		regmap_write(npcm_regmap, pdata->ctl_xor_check_bits,  in force_ecc_error()
252 			     val | (UE_SYNDROME << pdata->xor_check_bits_shift));  in force_ecc_error()
256 	regmap_update_bits(npcm_regmap, pdata->ctl_xor_check_bits,  in force_ecc_error()
257 			   pdata->fwc_mask, pdata->fwc_mask);  in force_ecc_error()
272  *   error_type		- 0: CE, 1: UE
273  *   location		- 0: data, 1: checkcode
274  *   bit		- 0 ~ 63 for data and 0 ~ 7 for checkcode
275  *   force_ecc_error	- trigger
279  *      ~# echo 0 > /sys/kernel/debug/edac/npcm-edac/error_type
280  *      ~# echo 1 > /sys/kernel/debug/edac/npcm-edac/location
281  *      ~# echo 7 > /sys/kernel/debug/edac/npcm-edac/bit
282  *      ~# echo 1 > /sys/kernel/debug/edac/npcm-edac/force_ecc_error
285  *      ~# echo 1 > /sys/kernel/debug/edac/npcm-edac/error_type
286  *      ~# echo 1 > /sys/kernel/debug/edac/npcm-edac/force_ecc_error
290 	struct priv_data *priv = mci->pvt_info;  in setup_debugfs()
292 	priv->debugfs = edac_debugfs_create_dir(mci->mod_name);  in setup_debugfs()
293 	if (!priv->debugfs)  in setup_debugfs()
296 	edac_debugfs_create_x8("error_type", 0644, priv->debugfs, &priv->error_type);  in setup_debugfs()
297 	edac_debugfs_create_x8("location", 0644, priv->debugfs, &priv->location);  in setup_debugfs()
298 	edac_debugfs_create_x8("bit", 0644, priv->debugfs, &priv->bit);  in setup_debugfs()
299 	edac_debugfs_create_file("force_ecc_error", 0200, priv->debugfs,  in setup_debugfs()
300 				 &mci->dev, &force_ecc_error_fops);  in setup_debugfs()
308 	pdata = ((struct priv_data *)mci->pvt_info)->pdata;  in setup_irq()
315 	ret = devm_request_irq(&pdev->dev, irq, edac_ecc_isr, 0,  in setup_irq()
316 			       dev_name(&pdev->dev), mci);  in setup_irq()
323 	regmap_write(npcm_regmap, pdata->ctl_int_mask_master,  in setup_irq()
324 		     pdata->int_mask_master_non_ecc_mask);  in setup_irq()
326 	if (pdata->chip == NPCM8XX_CHIP)  in setup_irq()
327 		regmap_write(npcm_regmap, pdata->ctl_int_mask_ecc,  in setup_irq()
328 			     pdata->int_mask_ecc_non_event_mask);  in setup_irq()
342 	struct device *dev = &pdev->dev;  in edac_probe()
360 		return -EINVAL;  in edac_probe()
363 	regmap_read(npcm_regmap, pdata->ctl_ecc_en, &val);  in edac_probe()
364 	if (!(val & pdata->ecc_en_mask)) {  in edac_probe()
366 		return -EPERM;  in edac_probe()
377 		return -ENOMEM;  in edac_probe()
379 	mci->pdev = &pdev->dev;  in edac_probe()
380 	priv = mci->pvt_info;  in edac_probe()
381 	priv->reg = reg;  in edac_probe()
382 	priv->pdata = pdata;  in edac_probe()
385 	mci->mtype_cap = MEM_FLAG_DDR4;  in edac_probe()
386 	mci->edac_ctl_cap = EDAC_FLAG_SECDED;  in edac_probe()
387 	mci->scrub_cap = SCRUB_FLAG_HW_SRC;  in edac_probe()
388 	mci->scrub_mode = SCRUB_HW_SRC;  in edac_probe()
389 	mci->edac_cap = EDAC_FLAG_SECDED;  in edac_probe()
390 	mci->ctl_name = "npcm_ddr_controller";  in edac_probe()
391 	mci->dev_name = dev_name(&pdev->dev);  in edac_probe()
392 	mci->mod_name = EDAC_MOD_NAME;  in edac_probe()
393 	mci->ctl_page_to_phys = NULL;  in edac_probe()
403 	if (IS_ENABLED(CONFIG_EDAC_DEBUG) && pdata->chip == NPCM8XX_CHIP)  in edac_probe()
416 	struct priv_data *priv = mci->pvt_info;  in edac_remove()
419 	pdata = priv->pdata;  in edac_remove()
420 	if (IS_ENABLED(CONFIG_EDAC_DEBUG) && pdata->chip == NPCM8XX_CHIP)  in edac_remove()
421 		edac_debugfs_remove_recursive(priv->debugfs);  in edac_remove()
423 	edac_mc_del_mc(&pdev->dev);  in edac_remove()
426 	regmap_write(npcm_regmap, pdata->ctl_int_mask_master,  in edac_remove()
427 		     pdata->int_mask_master_global_mask);  in edac_remove()
428 	regmap_update_bits(npcm_regmap, pdata->ctl_ecc_en, pdata->ecc_en_mask, 0);  in edac_remove()
434 	/* memory controller registers */
468 	/* memory controller registers */
516 		.compatible = "nuvoton,npcm750-memory-controller",
520 		.compatible = "nuvoton,npcm845-memory-controller",
530 		.name = "npcm-edac",