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: Mauro Carvalho Chehab <mchehab@redhat.com>

1 files changed, 54 insertions, 2 deletions

diff --git a/drivers/edac/ghes_edac.c b/drivers/edac/ghes_edac.c
index d8e54b496e0f..0853f450d2c1 100644
--- a/drivers/edac/ghes_edac.c
+++ b/drivers/edac/ghes_edac.c
@@ -27,8 +27,60 @@ static DEFINE_MUTEX(ghes_edac_lock);
 static int ghes_edac_mc_num;
 
 void ghes_edac_report_mem_error(struct ghes *ghes, int sev,
-                               struct cper_sec_mem_err *mem_err)
+                                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);
 
@@ -60,7 +112,7 @@ int ghes_edac_register(struct ghes *ghes, struct device *dev)
 
         pvt = mci->pvt_info;
         memset(pvt, 0, sizeof(*pvt));
-        list_add_tail(&pvt->list, &ghes_reglist);
+        list_add_tail(&pvt->list, &ghes_reglist);
         pvt->ghes = ghes;
         pvt->mci  = mci;
         mci->pdev = dev;