1 // SPDX-License-Identifier: GPL-2.0-only
3  * Copyright 2011-2012 Calxeda, Inc.
17 /* DDR Ctrlr Error Registers */
36 /* DDR Ctrlr Interrupt Registers */
57 	struct hb_mc_drvdata *drvdata = mci->pvt_info;  in highbank_mc_err_handler()
61 	status = readl(drvdata->mc_int_base + HB_DDR_ECC_INT_STATUS);  in highbank_mc_err_handler()
64 		err_addr = readl(drvdata->mc_err_base + HB_DDR_ECC_U_ERR_ADDR);  in highbank_mc_err_handler()
68 				     0, 0, -1,  in highbank_mc_err_handler()
69 				     mci->ctl_name, "");  in highbank_mc_err_handler()
72 		u32 syndrome = readl(drvdata->mc_err_base + HB_DDR_ECC_C_ERR_STAT);  in highbank_mc_err_handler()
74 		err_addr = readl(drvdata->mc_err_base + HB_DDR_ECC_C_ERR_ADDR);  in highbank_mc_err_handler()
78 				     0, 0, -1,  in highbank_mc_err_handler()
79 				     mci->ctl_name, "");  in highbank_mc_err_handler()
83 	writel(status, drvdata->mc_int_base + HB_DDR_ECC_INT_ACK);  in highbank_mc_err_handler()
89 	struct hb_mc_drvdata *pdata = mci->pvt_info;  in highbank_mc_err_inject()
92 	reg = readl(pdata->mc_err_base + HB_DDR_ECC_OPT);  in highbank_mc_err_inject()
95 	writel(reg, pdata->mc_err_base + HB_DDR_ECC_OPT);  in highbank_mc_err_inject()
107 		return -EINVAL;  in highbank_mc_inject_ctrl()
139 	{ .compatible = "calxeda,hb-ddr-ctrl",		.data = &hb_settings },
140 	{ .compatible = "calxeda,ecx-2000-ddr-ctrl",	.data = &mw_settings },
159 	id = of_match_device(hb_ddr_ctrl_of_match, &pdev->dev);  in highbank_mc_probe()
161 		return -ENODEV;  in highbank_mc_probe()
172 		return -ENOMEM;  in highbank_mc_probe()
174 	mci->pdev = &pdev->dev;  in highbank_mc_probe()
175 	drvdata = mci->pvt_info;  in highbank_mc_probe()
178 	if (!devres_open_group(&pdev->dev, NULL, GFP_KERNEL)) {  in highbank_mc_probe()
179 		res = -ENOMEM;  in highbank_mc_probe()
185 		dev_err(&pdev->dev, "Unable to get mem resource\n");  in highbank_mc_probe()
186 		res = -ENODEV;  in highbank_mc_probe()
190 	if (!devm_request_mem_region(&pdev->dev, r->start,  in highbank_mc_probe()
191 				     resource_size(r), dev_name(&pdev->dev))) {  in highbank_mc_probe()
192 		dev_err(&pdev->dev, "Error while requesting mem region\n");  in highbank_mc_probe()
193 		res = -EBUSY;  in highbank_mc_probe()
197 	base = devm_ioremap(&pdev->dev, r->start, resource_size(r));  in highbank_mc_probe()
199 		dev_err(&pdev->dev, "Unable to map regs\n");  in highbank_mc_probe()
200 		res = -ENOMEM;  in highbank_mc_probe()
204 	settings = id->data;  in highbank_mc_probe()
205 	drvdata->mc_err_base = base + settings->err_offset;  in highbank_mc_probe()
206 	drvdata->mc_int_base = base + settings->int_offset;  in highbank_mc_probe()
208 	control = readl(drvdata->mc_err_base + HB_DDR_ECC_OPT) & 0x3;  in highbank_mc_probe()
210 		dev_err(&pdev->dev, "No ECC present, or ECC disabled\n");  in highbank_mc_probe()
211 		res = -ENODEV;  in highbank_mc_probe()
215 	mci->mtype_cap = MEM_FLAG_DDR3;  in highbank_mc_probe()
216 	mci->edac_ctl_cap = EDAC_FLAG_NONE | EDAC_FLAG_SECDED;  in highbank_mc_probe()
217 	mci->edac_cap = EDAC_FLAG_SECDED;  in highbank_mc_probe()
218 	mci->mod_name = pdev->dev.driver->name;  in highbank_mc_probe()
219 	mci->ctl_name = id->compatible;  in highbank_mc_probe()
220 	mci->dev_name = dev_name(&pdev->dev);  in highbank_mc_probe()
221 	mci->scrub_mode = SCRUB_SW_SRC;  in highbank_mc_probe()
224 	dimm = *mci->dimms;  in highbank_mc_probe()
225 	dimm->nr_pages = (~0UL >> PAGE_SHIFT) + 1;  in highbank_mc_probe()
226 	dimm->grain = 8;  in highbank_mc_probe()
227 	dimm->dtype = DEV_X8;  in highbank_mc_probe()
228 	dimm->mtype = MEM_DDR3;  in highbank_mc_probe()
229 	dimm->edac_mode = EDAC_SECDED;  in highbank_mc_probe()
236 	res = devm_request_irq(&pdev->dev, irq, highbank_mc_err_handler,  in highbank_mc_probe()
237 			       0, dev_name(&pdev->dev), mci);  in highbank_mc_probe()
239 		dev_err(&pdev->dev, "Unable to request irq %d\n", irq);  in highbank_mc_probe()
243 	devres_close_group(&pdev->dev, NULL);  in highbank_mc_probe()
246 	edac_mc_del_mc(&pdev->dev);  in highbank_mc_probe()
248 	devres_release_group(&pdev->dev, NULL);  in highbank_mc_probe()
258 	edac_mc_del_mc(&pdev->dev);  in highbank_mc_remove()