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Date: Tue, 23 Nov 2021 19:41:00 +0200
From: Ido Schimmel <idosch@...sch.org>
To: netdev@...r.kernel.org
Cc: mkubecek@...e.cz, popadrian1996@...il.com, andrew@...n.ch,
mlxsw@...dia.com, moshe@...dia.com,
Ido Schimmel <idosch@...dia.com>
Subject: [PATCH ethtool-next 6/8] cmis: Print Module State and Fault Cause
From: Ido Schimmel <idosch@...dia.com>
Print the CMIS Module State when dumping EEPROM contents via the '-m'
option. It can be used, for example, to test module power mode settings.
Example output:
# ethtool -m swp11
Identifier : 0x18 (QSFP-DD Double Density 8X Pluggable Transceiver (INF-8628))
...
Module State : 0x03 (ModuleReady)
# ethtool --set-module swp11 power-mode-policy auto
# ethtool -m swp11
Identifier : 0x18 (QSFP-DD Double Density 8X Pluggable Transceiver (INF-8628))
...
Module State : 0x01 (ModuleLowPwr)
In case the module is in fault state, print the CMIS Module Fault Cause.
Signed-off-by: Ido Schimmel <idosch@...dia.com>
---
cmis.c | 70 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
cmis.h | 16 ++++++++++++++
2 files changed, 86 insertions(+)
diff --git a/cmis.c b/cmis.c
index d7b7097139b3..a32cc9f8b1f6 100644
--- a/cmis.c
+++ b/cmis.c
@@ -402,6 +402,74 @@ static void cmis_show_vendor_info(const struct cmis_memory_map *map)
CMIS_CLEI_END_OFFSET, "CLEI code");
}
+/* Print the current Module State. Relevant documents:
+ * [1] CMIS Rev. 5, pag. 57, section 6.3.2.2, Figure 6-3
+ * [2] CMIS Rev. 5, pag. 60, section 6.3.2.3, Figure 6-4
+ * [3] CMIS Rev. 5, pag. 107, section 8.2.2, Table 8-6
+ */
+static void cmis_show_mod_state(const struct cmis_memory_map *map)
+{
+ __u8 mod_state;
+
+ mod_state = (map->lower_memory[CMIS_MODULE_STATE_OFFSET] &
+ CMIS_MODULE_STATE_MASK) >> 1;
+ printf("\t%-41s : 0x%02x", "Module State", mod_state);
+ switch (mod_state) {
+ case CMIS_MODULE_STATE_MODULE_LOW_PWR:
+ printf(" (ModuleLowPwr)\n");
+ break;
+ case CMIS_MODULE_STATE_MODULE_PWR_UP:
+ printf(" (ModulePwrUp)\n");
+ break;
+ case CMIS_MODULE_STATE_MODULE_READY:
+ printf(" (ModuleReady)\n");
+ break;
+ case CMIS_MODULE_STATE_MODULE_PWR_DN:
+ printf(" (ModulePwrDn)\n");
+ break;
+ case CMIS_MODULE_STATE_MODULE_FAULT:
+ printf(" (ModuleFault)\n");
+ break;
+ default:
+ printf(" (reserved or unknown)\n");
+ break;
+ }
+}
+
+/* Print the Module Fault Information. Relevant documents:
+ * [1] CMIS Rev. 5, pag. 64, section 6.3.2.12
+ * [2] CMIS Rev. 5, pag. 115, section 8.2.10, Table 8-15
+ */
+static void cmis_show_mod_fault_cause(const struct cmis_memory_map *map)
+{
+ __u8 mod_state, fault_cause;
+
+ mod_state = (map->lower_memory[CMIS_MODULE_STATE_OFFSET] &
+ CMIS_MODULE_STATE_MASK) >> 1;
+ if (mod_state != CMIS_MODULE_STATE_MODULE_FAULT)
+ return;
+
+ fault_cause = map->lower_memory[CMIS_MODULE_FAULT_OFFSET];
+ printf("\t%-41s : 0x%02x", "Module Fault Cause", fault_cause);
+ switch (fault_cause) {
+ case CMIS_MODULE_FAULT_NO_FAULT:
+ printf(" (No fault detected / not supported)\n");
+ break;
+ case CMIS_MODULE_FAULT_TEC_RUNAWAY:
+ printf(" (TEC runaway)\n");
+ break;
+ case CMIS_MODULE_FAULT_DATA_MEM_CORRUPTED:
+ printf(" (Data memory corrupted)\n");
+ break;
+ case CMIS_MODULE_FAULT_PROG_MEM_CORRUPTED:
+ printf(" (Program memory corrupted)\n");
+ break;
+ default:
+ printf(" (reserved or unknown)\n");
+ break;
+ }
+}
+
static void cmis_parse_dom_power_type(const struct cmis_memory_map *map,
struct sff_diags *sd)
{
@@ -775,6 +843,8 @@ static void cmis_show_all_common(const struct cmis_memory_map *map)
cmis_show_link_len(map);
cmis_show_vendor_info(map);
cmis_show_rev_compliance(map);
+ cmis_show_mod_state(map);
+ cmis_show_mod_fault_cause(map);
cmis_show_dom(map);
}
diff --git a/cmis.h b/cmis.h
index 310697b0ef32..2c67ad5640ab 100644
--- a/cmis.h
+++ b/cmis.h
@@ -7,6 +7,15 @@
#define CMIS_MEMORY_MODEL_OFFSET 0x02
#define CMIS_MEMORY_MODEL_MASK 0x80
+/* Global Status Information (Page 0) */
+#define CMIS_MODULE_STATE_OFFSET 0x03
+#define CMIS_MODULE_STATE_MASK 0x0E
+#define CMIS_MODULE_STATE_MODULE_LOW_PWR 0x01
+#define CMIS_MODULE_STATE_MODULE_PWR_UP 0x02
+#define CMIS_MODULE_STATE_MODULE_READY 0x03
+#define CMIS_MODULE_STATE_MODULE_PWR_DN 0x04
+#define CMIS_MODULE_STATE_MODULE_FAULT 0x05
+
/* Module Flags (Page 0) */
#define CMIS_VCC_AW_OFFSET 0x09
#define CMIS_VCC_LWARN_STATUS 0x80
@@ -27,6 +36,13 @@
#define CMIS_CURR_TEMP_OFFSET 0x0E
#define CMIS_CURR_VCC_OFFSET 0x10
+/* Module Fault Information (Page 0) */
+#define CMIS_MODULE_FAULT_OFFSET 0x29
+#define CMIS_MODULE_FAULT_NO_FAULT 0x00
+#define CMIS_MODULE_FAULT_TEC_RUNAWAY 0x01
+#define CMIS_MODULE_FAULT_DATA_MEM_CORRUPTED 0x02
+#define CMIS_MODULE_FAULT_PROG_MEM_CORRUPTED 0x03
+
#define CMIS_CTOR_OFFSET 0xCB
/* Vendor related information (Page 0) */
--
2.31.1
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