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+Diagnostic Monitoring Interface Monitoring also called DOM is a specification
+for optical transceivers to allow link and other diagnostics related to the
+transceiver's to standardized and communicated. For communication the I2C
+bus is used. The SFF specifications is available at ftp://ftp.seagate.com/
+Specification is generic and should work for many types of optical modules
+as GBIC, SFP, SFp+, XFP etc
+
+In short DOM spec adds a memory page where the diagnostics's is kept (address
+0xA2 bytes 66 to 105) but there are lot's of option's and variants. For example
+alarm and warnings are optional. See example below.
+
+Not all SFP's (SFP is for GIGE) have DOM support normally long range supports
+DOM. And of course your board and driver needs this support too.
+For SFP+ (10G) DOM is mandatory.
+
+Linux kernel support is via ethertool.
+
+include/net/dom.h # Basic definitions
+net/core/ethtool.c # adds ethtool_phy_diag()
+include/linux/ethtool.h # adds ETHTOOL_GPHYDIAG
+
+And drivers hooks exists currently in igb and ixgbe driver
+
+Usage example: ethtool -D eth5
+
+Ext-Calbr: Avr RX-Power: Alarm & Warn: RX_LOS: Wavelength: 1310 nm
+Alarms, warnings in beginning of line, Ie. AH = Alarm High, WL == Warn Low etc
+ Temp: 35.9 C Thresh: Lo: -12.0/-8.0 Hi: 103.0/110.0 C
+ Vcc: 3.33 V Thresh: Lo: 3.0/3.0 Hi: 3.7/4.0 V
+ Tx-Bias: 13.4 mA Thresh: Lo: 2.0/4.0 Hi: 70.0/84.0 mA
+ALWL TX-pwr: -5.9 dBm ( 0.26 mW) Thresh: Lo: -4.0/-2.0 Hi: 7.0/8.2 dBm
+AHWH RX-pwr: -5.0 dBm ( 0.31 mW) Thresh: Lo: -35.2/-28.0 Hi: -8.2/-6.0 dBm
+
+
+First line shows the options supported by the module. As we see this module
+supports Alarms and warnings as a consequence thresholds are printed. As example
+RX-pwr: -35.2 < no_alarm < -6.0 dBm and -28.0 < no_warning < -8.2 dBm. (dBm yields
+1 mW == 0 dBm)
+
+In the example above we see both warnings for both TX-pwr (low) and RX-Pwr high.
+The Rx side would need some attenuation.
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+#ifndef _LINUX_DOM_H
+#define _LINUX_DOM_H
+
+/*
+ Diagnostic Monitoring Interface for Optical Tranceivers
+ SFF-8472 v. 10.4 (Jan 2009)
+ ftp://ftp.seagate.com/sff/SFF-8472.PDF
+
+ Licensce GPL. Copyright Robert Olsson robert@herjulf.net
+*/
+
+#define DOM_A0_IDENTIFIER 0
+#define DOM_A0_WAVELENGTH 60
+#define DOM_A0_CC_BASE 63
+#define DOM_A0_DOM_TYPE 92
+
+/* DOM_TYPE codings in DOM_A0_DOM_TYPE */
+#define DOM_TYPE_LEGAGY_DOM (1<<7)
+#define DOM_TYPE_DOM (1<<6) /* Has DOM support */
+#define DOM_TYPE_INT_CAL (1<<5) /* Internally calibrated */
+#define DOM_TYPE_EXT_CAL (1<<4) /* Externally calibrated */
+#define DOM_TYPE_RX_PWR (1<<3) /* Received Power OMA=0, 1=average */
+#define DOM_TYPE_ADDR_CHNGE (1<<2) /* Address change required */
+
+#define DOM_A0_EO 93 /* Enhanced options */
+#define DOM_EO_AW (1<<7) /* Alarm & Warnings */
+#define DOM_EO_TX_DISABLE (1<<6)
+#define DOM_EO_TX_FAULT (1<<5)
+#define DOM_EO_RX_LOS (1<<4)
+#define DOM_EO_RATE_SELECT_MON (1<<3)
+#define DOM_EO_APP_SELECT (1<<2)
+#define DOM_EO_RATE_SELECT (1<<1)
+
+#define DOM_A0_CC_EXT 95
+
+#define DOM_A2_TEMP_AHT 0 /* Temp alarm high threshold */
+#define DOM_A2_TEMP_ALT 2
+#define DOM_A2_TEMP_WHT 4 /* Temp warning high threshold */
+#define DOM_A2_TEMP_WLT 6
+
+#define DOM_A2_VCC_AHT 8 /* VCC alarm high threshold */
+#define DOM_A2_VCC_ALT 10
+#define DOM_A2_VCC_WHT 12 /* VCC warning high threshold */
+#define DOM_A2_VCC_WLT 14
+
+#define DOM_A2_TX_BIAS_AHT 16 /* TX_BIAS alarm high threshold */
+#define DOM_A2_TX_BIAS_ALT 18
+#define DOM_A2_TX_BIAS_WHT 20 /* TX_BIAS warning high threshold */
+#define DOM_A2_TX_BIAS_WLT 22
+
+#define DOM_A2_TX_PWR_AHT 24 /* TX_PWR alarm high threshold */
+#define DOM_A2_TX_PWR_ALT 26
+#define DOM_A2_TX_PWR_WHT 28 /* TX_PWR warning high threshold */
+#define DOM_A2_TX_PWR_WLT 30
+
+#define DOM_A2_RX_PWR_AHT 32 /* RX_PWR alarm high threshold */
+#define DOM_A2_RX_PWR_ALT 34
+#define DOM_A2_RX_PWR_WHT 36 /* RX_PWR warning high threshold */
+#define DOM_A2_RX_PWR_WLT 38
+
+#define DOM_A2_RX_PWR_4 56 /* 4 bytes Calibration constants*/
+#define DOM_A2_RX_PWR_3 60 /* 4 bytes */
+#define DOM_A2_RX_PWR_2 64 /* 4 bytes */
+#define DOM_A2_RX_PWR_1 68 /* 4 bytes */
+#define DOM_A2_RX_PWR_0 72 /* 4 bytes */
+
+#define DOM_A2_TX_I_SLOPE 76 /* 2 bytes */
+#define DOM_A2_TX_I_OFFSET 78 /* 2 bytes */
+#define DOM_A2_TX_PWR_SLOPE 80 /* 2 bytes */
+#define DOM_A2_TX_PWR_OFFSET 82 /* 2 bytes */
+#define DOM_A2_TEMP_SLOPE 84 /* 2 bytes */
+#define DOM_A2_TEMP_OFFSET 86 /* 2 bytes */
+#define DOM_A2_VCC_SLOPE 88 /* 2 bytes */
+#define DOM_A2_VCC_OFFSET 90 /* 2 bytes */
+
+#define DOM_A2_CC_DMI 95
+#define DOM_A2_TEMP 96 /* 2 bytes */
+#define DOM_A2_VCC 98 /* 2 bytes */
+#define DOM_A2_TX_BIAS 100 /* 2 bytes */
+#define DOM_A2_TX_PWR 102 /* 2 bytes */
+#define DOM_A2_RX_PWR 104 /* 2 bytes */
+
+#define DOM_A2_ALARM 112 /* 2 bytes */
+#define DOM_TYPE_TEMP_AH (1<<7) /* Temp alarm high */
+#define DOM_TYPE_TEMP_AL (1<<6) /* low */
+#define DOM_TYPE_VCC_AH (1<<5)
+#define DOM_TYPE_VCC_AL (1<<4)
+#define DOM_TYPE_TX_BIAS_AH (1<<3)
+#define DOM_TYPE_TX_BIAS_AL (1<<2)
+#define DOM_TYPE_TX_PWR_AH (1<<1)
+#define DOM_TYPE_TX_PWR_AL (1<<0)
+/* Next byte 113 */
+#define DOM_TYPE_RX_PWR_AH (1<<7)
+#define DOM_TYPE_RX_PWR_AL (1<<6)
+
+#define DOM_A2_WARNING 116 /* 2 bytes */
+#define DOM_TYPE_TEMP_WH (1<<7) /* Temp warning high */
+#define DOM_TYPE_TEMP_WL (1<<6) /* low */
+#define DOM_TYPE_VCC_WH (1<<5)
+#define DOM_TYPE_VCC_WL (1<<4)
+#define DOM_TYPE_TX_BIAS_WH (1<<3)
+#define DOM_TYPE_TX_BIAS_WL (1<<2)
+#define DOM_TYPE_TX_PWR_WH (1<<1)
+#define DOM_TYPE_TX_PWR_WL (1<<0)
+/* Next byte 117 */
+#define DOM_TYPE_RX_PWR_WH (1<<7)
+#define DOM_TYPE_RX_PWR_WL (1<<6)
+
+#endif /* _LINUX_DOM_H */
Signed-off-by: Robert Olsson <robert.olsson@its.uu.se> -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html