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From 4a86034f138e1a96e54047b8036b0a4425e99944 Mon Sep 17 00:00:00 2001
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From: Ido Schimmel <idosch@nvidia.com>
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Date: Tue, 23 Nov 2021 19:41:00 +0200
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Subject: [PATCH 32/35] cmis: Print Module State and Fault Cause
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Print the CMIS Module State when dumping EEPROM contents via the '-m'
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option. It can be used, for example, to test module power mode settings.
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Example output:
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# ethtool -m swp11
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Identifier : 0x18 (QSFP-DD Double Density 8X Pluggable Transceiver (INF-8628))
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...
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Module State : 0x03 (ModuleReady)
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# ethtool --set-module swp11 power-mode-policy auto
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# ethtool -m swp11
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Identifier : 0x18 (QSFP-DD Double Density 8X Pluggable Transceiver (INF-8628))
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...
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Module State : 0x01 (ModuleLowPwr)
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In case the module is in fault state, print the CMIS Module Fault Cause.
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Signed-off-by: Ido Schimmel <idosch@nvidia.com>
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---
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cmis.c | 70 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
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cmis.h | 16 ++++++++++++++
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2 files changed, 86 insertions(+)
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diff --git a/cmis.c b/cmis.c
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index d7b7097139b3..a32cc9f8b1f6 100644
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--- a/cmis.c
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+++ b/cmis.c
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@@ -402,6 +402,74 @@ static void cmis_show_vendor_info(const struct cmis_memory_map *map)
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CMIS_CLEI_END_OFFSET, "CLEI code");
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}
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+/* Print the current Module State. Relevant documents:
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+ * [1] CMIS Rev. 5, pag. 57, section 6.3.2.2, Figure 6-3
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+ * [2] CMIS Rev. 5, pag. 60, section 6.3.2.3, Figure 6-4
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+ * [3] CMIS Rev. 5, pag. 107, section 8.2.2, Table 8-6
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+ */
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+static void cmis_show_mod_state(const struct cmis_memory_map *map)
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+{
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+ __u8 mod_state;
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+
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+ mod_state = (map->lower_memory[CMIS_MODULE_STATE_OFFSET] &
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+ CMIS_MODULE_STATE_MASK) >> 1;
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+ printf("\t%-41s : 0x%02x", "Module State", mod_state);
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+ switch (mod_state) {
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+ case CMIS_MODULE_STATE_MODULE_LOW_PWR:
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+ printf(" (ModuleLowPwr)\n");
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+ break;
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+ case CMIS_MODULE_STATE_MODULE_PWR_UP:
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+ printf(" (ModulePwrUp)\n");
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+ break;
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+ case CMIS_MODULE_STATE_MODULE_READY:
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+ printf(" (ModuleReady)\n");
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+ break;
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+ case CMIS_MODULE_STATE_MODULE_PWR_DN:
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+ printf(" (ModulePwrDn)\n");
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+ break;
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+ case CMIS_MODULE_STATE_MODULE_FAULT:
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+ printf(" (ModuleFault)\n");
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+ break;
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+ default:
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+ printf(" (reserved or unknown)\n");
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+ break;
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+ }
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+}
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+
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+/* Print the Module Fault Information. Relevant documents:
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+ * [1] CMIS Rev. 5, pag. 64, section 6.3.2.12
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+ * [2] CMIS Rev. 5, pag. 115, section 8.2.10, Table 8-15
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+ */
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+static void cmis_show_mod_fault_cause(const struct cmis_memory_map *map)
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+{
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+ __u8 mod_state, fault_cause;
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+
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+ mod_state = (map->lower_memory[CMIS_MODULE_STATE_OFFSET] &
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+ CMIS_MODULE_STATE_MASK) >> 1;
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+ if (mod_state != CMIS_MODULE_STATE_MODULE_FAULT)
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+ return;
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+
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+ fault_cause = map->lower_memory[CMIS_MODULE_FAULT_OFFSET];
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+ printf("\t%-41s : 0x%02x", "Module Fault Cause", fault_cause);
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+ switch (fault_cause) {
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+ case CMIS_MODULE_FAULT_NO_FAULT:
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+ printf(" (No fault detected / not supported)\n");
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+ break;
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+ case CMIS_MODULE_FAULT_TEC_RUNAWAY:
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+ printf(" (TEC runaway)\n");
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+ break;
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+ case CMIS_MODULE_FAULT_DATA_MEM_CORRUPTED:
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+ printf(" (Data memory corrupted)\n");
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+ break;
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+ case CMIS_MODULE_FAULT_PROG_MEM_CORRUPTED:
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+ printf(" (Program memory corrupted)\n");
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+ break;
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+ default:
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+ printf(" (reserved or unknown)\n");
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+ break;
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+ }
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+}
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+
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static void cmis_parse_dom_power_type(const struct cmis_memory_map *map,
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struct sff_diags *sd)
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{
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@@ -775,6 +843,8 @@ static void cmis_show_all_common(const struct cmis_memory_map *map)
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cmis_show_link_len(map);
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cmis_show_vendor_info(map);
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cmis_show_rev_compliance(map);
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+ cmis_show_mod_state(map);
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+ cmis_show_mod_fault_cause(map);
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cmis_show_dom(map);
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}
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diff --git a/cmis.h b/cmis.h
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index 310697b0ef32..2c67ad5640ab 100644
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--- a/cmis.h
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+++ b/cmis.h
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@@ -7,6 +7,15 @@
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#define CMIS_MEMORY_MODEL_OFFSET 0x02
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#define CMIS_MEMORY_MODEL_MASK 0x80
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+/* Global Status Information (Page 0) */
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+#define CMIS_MODULE_STATE_OFFSET 0x03
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+#define CMIS_MODULE_STATE_MASK 0x0E
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+#define CMIS_MODULE_STATE_MODULE_LOW_PWR 0x01
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+#define CMIS_MODULE_STATE_MODULE_PWR_UP 0x02
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+#define CMIS_MODULE_STATE_MODULE_READY 0x03
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+#define CMIS_MODULE_STATE_MODULE_PWR_DN 0x04
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+#define CMIS_MODULE_STATE_MODULE_FAULT 0x05
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+
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/* Module Flags (Page 0) */
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#define CMIS_VCC_AW_OFFSET 0x09
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#define CMIS_VCC_LWARN_STATUS 0x80
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@@ -27,6 +36,13 @@
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#define CMIS_CURR_TEMP_OFFSET 0x0E
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#define CMIS_CURR_VCC_OFFSET 0x10
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+/* Module Fault Information (Page 0) */
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+#define CMIS_MODULE_FAULT_OFFSET 0x29
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+#define CMIS_MODULE_FAULT_NO_FAULT 0x00
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+#define CMIS_MODULE_FAULT_TEC_RUNAWAY 0x01
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+#define CMIS_MODULE_FAULT_DATA_MEM_CORRUPTED 0x02
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+#define CMIS_MODULE_FAULT_PROG_MEM_CORRUPTED 0x03
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+
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#define CMIS_CTOR_OFFSET 0xCB
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/* Vendor related information (Page 0) */
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--
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2.35.1
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