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Subject[PATCH 19/21] amd64_edac: add debugging/testing code
Date
From: Doug Thompson <dougthompson@xmission.com>

This is for dumping different registers and testing the address mapping
logic using the ECC syndromes.

Signed-off-by: Doug Thompson <dougthompson@xmission.com>
Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
---
drivers/edac/amd64_edac.c | 216 +++++++++++++++++++++++++++++++++++++++++++++
1 files changed, 216 insertions(+), 0 deletions(-)
diff --git a/drivers/edac/amd64_edac.c b/drivers/edac/amd64_edac.c
index 5484c11..3c04fd6 100644
--- a/drivers/edac/amd64_edac.c
+++ b/drivers/edac/amd64_edac.c
@@ -4438,3 +4438,219 @@ static int amd64_check_ecc_enabled(struct amd64_pvt *pvt)
return rc;
}

+#ifdef CONFIG_EDAC_DEBUG
+/*
+ * amd64_nbea_store
+ *
+ * Accept a hex value and store it into the virutal error
+ * register file, field: nbeal and nbeah
+ *
+ * Assume virtual error values have already been set for:
+ * NBSL, NBSH and NBCFG
+ *
+ * Then proceed to map the error values to a:
+ * MC, CSROW and CHANNEL
+ */
+static ssize_t amd64_nbea_store(struct mem_ctl_info *mci,
+ const char *data, size_t count)
+{
+ struct amd64_pvt *pvt = mci->pvt_info;
+ unsigned long long value;
+ int rc;
+
+ rc = strict_strtoull(data, 16, &value);
+ if (rc != -EINVAL) {
+ debugf0("%s() received NBEA= 0x%llx\n", __func__, value);
+
+ /* place the value into the virtual error packet */
+ pvt->ctl_error_info.nbeal = (u32) value;
+ value >>= 32;
+ pvt->ctl_error_info.nbeah = (u32) value;
+
+ /* Process the Mapping request */
+ /* TODO: Add race preventation */
+ amd64_process_error_info(mci, &pvt->ctl_error_info, 1);
+
+ return count;
+ }
+ return 0;
+}
+
+/*
+ * amd64_nbea_show
+ *
+ * display back what the last NBEA address was written
+ */
+static ssize_t amd64_nbea_show(struct mem_ctl_info *mci, char *data)
+{
+ struct amd64_pvt *pvt = mci->pvt_info;
+ u64 value;
+
+ value = pvt->ctl_error_info.nbeah;
+ value <<= 32;
+ value |= pvt->ctl_error_info.nbeal;
+
+ return sprintf(data, "%lx\n", (unsigned long) value);
+}
+
+/*
+ * amd64_nbsl_store
+ *
+ * accept and store the NBSL value user desires
+ */
+static ssize_t amd64_nbsl_store(struct mem_ctl_info *mci,
+ const char *data, size_t count)
+{
+ struct amd64_pvt *pvt = mci->pvt_info;
+ unsigned long value;
+ int rc;
+
+ rc = strict_strtoul(data, 16, &value);
+ if (rc != -EINVAL) {
+ debugf0("%s() received NBSL= 0x%lx\n", __func__, value);
+
+ /* place the NBSL value into the virtual error packet */
+ pvt->ctl_error_info.nbsl = (u32) value;
+
+ return count;
+ }
+ return 0;
+}
+
+/*
+ * amd64_nbsl_show
+ *
+ * display back what the last NBSL value written
+ */
+static ssize_t amd64_nbsl_show(struct mem_ctl_info *mci, char *data)
+{
+ struct amd64_pvt *pvt = mci->pvt_info;
+ u32 value;
+
+ value = pvt->ctl_error_info.nbsl;
+
+ return sprintf(data, "%x\n", value);
+}
+
+/*
+ * amd64_nbsh_store
+ *
+ * accept and store the NBSH value user desires
+ */
+static ssize_t amd64_nbsh_store(struct mem_ctl_info *mci,
+ const char *data, size_t count)
+{
+ struct amd64_pvt *pvt = mci->pvt_info;
+ unsigned long value;
+ int rc;
+
+ rc = strict_strtoul(data, 16, &value);
+ if (rc != -EINVAL) {
+ debugf0("%s() received NBSL= 0x%lx\n", __func__, value);
+
+ /* place the NBSL value into the virtual error packet */
+ pvt->ctl_error_info.nbsh = (u32) value;
+
+ return count;
+ }
+ return 0;
+}
+
+/*
+ * amd64_nbsh_show
+ *
+ * display back what the last NBSL value written
+ */
+static ssize_t amd64_nbsh_show(struct mem_ctl_info *mci, char *data)
+{
+ struct amd64_pvt *pvt = mci->pvt_info;
+ u32 value;
+
+ value = pvt->ctl_error_info.nbsh;
+
+ return sprintf(data, "%x\n", value);
+}
+
+/*
+ * amd64_nbcfg_store
+ *
+ * accept and store the NBSL value user desires
+ */
+static ssize_t amd64_nbcfg_store(struct mem_ctl_info *mci,
+ const char *data, size_t count)
+{
+ struct amd64_pvt *pvt = mci->pvt_info;
+ unsigned long value;
+ int rc;
+
+ rc = strict_strtoul(data, 16, &value);
+ if (rc != -EINVAL) {
+ debugf0("%s() received NBCFG= 0x%lx\n", __func__, value);
+
+ /* place the NBSL value into the virtual error packet */
+ pvt->ctl_error_info.nbcfg = (u32) value;
+
+ return count;
+ }
+ return 0;
+}
+
+/*
+ * Various show routines for the controls of a MCI
+ */
+static ssize_t amd64_nbcfg_show(struct mem_ctl_info *mci, char *data)
+{
+ struct amd64_pvt *pvt = mci->pvt_info;
+
+ return sprintf(data, "%x\n",
+ pvt->ctl_error_info.nbcfg);
+}
+
+
+static ssize_t amd64_dhar_show(struct mem_ctl_info *mci, char *data)
+{
+ struct amd64_pvt *pvt = mci->pvt_info;
+
+ return sprintf(data, "%x\n", pvt->dhar);
+}
+
+
+static ssize_t amd64_dbam_show(struct mem_ctl_info *mci, char *data)
+{
+ struct amd64_pvt *pvt = mci->pvt_info;
+
+ return sprintf(data, "%x\n", pvt->dbam0);
+}
+
+
+static ssize_t amd64_topmem_show(struct mem_ctl_info *mci, char *data)
+{
+ struct amd64_pvt *pvt = mci->pvt_info;
+
+ return sprintf(data, "%lx\n", (long unsigned int) pvt->top_mem);
+}
+
+
+static ssize_t amd64_topmem2_show(struct mem_ctl_info *mci, char *data)
+{
+ struct amd64_pvt *pvt = mci->pvt_info;
+
+ return sprintf(data, "%lx\n", (long unsigned int) pvt->top_mem2);
+}
+
+static ssize_t amd64_hole_show(struct mem_ctl_info *mci, char *data)
+{
+ u64 hole_base = 0;
+ u64 hole_offset = 0;
+ u64 hole_size = 0;
+
+ amd64_get_dram_hole_info(mci, &hole_base, &hole_offset, &hole_size);
+
+ return sprintf(data, "%lx %lx %lx\n",
+ (long unsigned int) hole_base,
+ (long unsigned int) hole_offset,
+ (long unsigned int) hole_size);
+}
+
+#endif /* DEBUG */
+
--
1.6.2.4



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