ghes_edac: add support for reporting errors via EDAC

Now that the EDAC core is capable of just forward the errors via
the userspace API, add a report mechanism for the GHES errors.
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>

drivers/edac/ghes_edac.c

@@ -29,6 +29,58 @@ static int ghes_edac_mc_num;
 void ghes_edac_report_mem_error(struct ghes *ghes, int sev,
 				struct cper_sec_mem_err *mem_err)
 {
+	enum hw_event_mc_err_type type;
+	struct edac_raw_error_desc *e;
+	struct mem_ctl_info *mci;
+	struct ghes_edac_pvt *pvt = NULL;
+
+	list_for_each_entry(pvt, &ghes_reglist, list) {
+		if (ghes == pvt->ghes)
+			break;
+	}
+	if (!pvt) {
+		pr_err("Internal error: Can't find EDAC structure\n");
+		return;
+	}
+	mci = pvt->mci;
+	e = &mci->error_desc;
+
+	/* Cleans the error report buffer */
+	memset(e, 0, sizeof (*e));
+	e->error_count = 1;
+	e->msg = "APEI";
+	strcpy(e->label, "unknown");
+	e->other_detail = "";
+
+	if (mem_err->validation_bits & CPER_MEM_VALID_PHYSICAL_ADDRESS) {
+		e->page_frame_number = mem_err->physical_addr >> PAGE_SHIFT;
+		e->offset_in_page = mem_err->physical_addr & ~PAGE_MASK;
+		e->grain = ~(mem_err->physical_addr_mask & ~PAGE_MASK);
+	}
+
+	switch (sev) {
+	case GHES_SEV_CORRECTED:
+		type = HW_EVENT_ERR_CORRECTED;
+		break;
+	case GHES_SEV_RECOVERABLE:
+		type = HW_EVENT_ERR_UNCORRECTED;
+		break;
+	case GHES_SEV_PANIC:
+		type = HW_EVENT_ERR_FATAL;
+		break;
+	default:
+	case GHES_SEV_NO:
+		type = HW_EVENT_ERR_INFO;
+	}
+
+	sprintf(e->location,
+		"node:%d card:%d module:%d bank:%d device:%d row: %d column:%d bit_pos:%d",
+		mem_err->node, mem_err->card, mem_err->module,
+		mem_err->bank, mem_err->device, mem_err->row, mem_err->column,
+		mem_err->bit_pos);
+	edac_dbg(3, "error at location %s\n", e->location);
+
+	edac_raw_mc_handle_error(type, mci, e);
 }
 EXPORT_SYMBOL_GPL(ghes_edac_report_mem_error);