* Add new net/sff8436.h containing constants used to access

  QSFP+ data via i2c inteface. These constants has been taken
  from SFF-8436 "QSFP+ 10 Gbs 4X PLUGGABLE TRANSCEIVER" standard
  rev 4.8.
* Add support for printing QSFP+ information from 40G NICs
  such as Chelsio T5.

This commit does not contain ioctl changes necessary for this
functionality work, there will be another commit soon.

Example:
cxl1: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
        options=ec07bb<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,JUMBO_MTU,.....>
        ether 00:07:43:28:ad:08
        nd6 options=29<PERFORMNUD,IFDISABLED,AUTO_LINKLOCAL>
        media: Ethernet 40Gbase-LR4 <full-duplex>
        status: active
        plugged: QSFP+ 40GBASE-LR4 (MPO Parallel Optic)
        vendor: OEM PN: OP-QSFP-40G-LR4 SN: 20140318001 DATE: 2014-03-18
        module temperature: 64.06 C voltage: 3.26 Volts
        lane 1: RX: 0.47 mW (-3.21 dBm) TX: 2.78 mW (4.46 dBm)
        lane 2: RX: 0.20 mW (-6.94 dBm) TX: 2.80 mW (4.47 dBm)
        lane 3: RX: 0.18 mW (-7.38 dBm) TX: 2.79 mW (4.47 dBm)
        lane 4: RX: 0.90 mW (-0.45 dBm) TX: 2.80 mW (4.48 dBm)

Tested on:	Chelsio T5
Tested on:	Mellanox/Huawei passive/active cables/transceivers.
MFC after:	2 weeks
Sponsored by:	Yandex LLC

1 files changed, 211 insertions, 0 deletions

diff --git a/sys/net/sff8436.h b/sys/net/sff8436.h
new file mode 100644
index 000000000000..7d705b8447a9
--- /dev/null
+++ b/sys/net/sff8436.h
@@ -0,0 +1,211 @@
+/*-
+ * Copyright (c) 2014 Yandex LLC.
+ *
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * $FreeBSD$
+ */
+
+/*
+ * The following set of constants are from Document SFF-8436
+ * "QSFP+ 10 Gbs 4X PLUGGABLE TRANSCEIVER" revision 4.8 dated October 31, 2013
+ *
+ * This SFF standard defines the following QSFP+ memory address module:
+ *
+ * 1) 256-byte addressable block and 128-byte pages
+ * 2) Lower 128-bytes addresses always refer to the same page
+ * 3) Upper address space may refer to different pages depending on
+ *   "page select" byte value.
+ *
+ * Map description:
+ *
+ * Serial address 0xA02:
+ *
+ * Lower bits
+ * 0-127   Monitoring data & page select byte
+ * 128-255:
+ *
+ * Page 00:
+ * 128-191 Base ID Fields
+ * 191-223 Extended ID
+ * 223-255 Vendor Specific ID
+ *
+ * Page 01 (optional):
+ * 128-255 App-specific data
+ *
+ * Page 02 (optional):
+ * 128-255 User EEPROM Data
+ *
+ * Page 03 (optional for Cable Assmeblies)
+ * 128-223 Thresholds
+ * 225-237 Vendor Specific
+ * 238-253 Channel Controls/Monitor
+ * 254-255 Reserverd
+ *
+ * All these values are read across an I2C (i squared C) bus.
+ */
+
+#define	SFF_8436_BASE	0xA0	/* Base address for all requests */
+
+/* Table 17 - Lower Memory Map */
+enum {
+	SFF_8436_MID		= 0,	/* Copy of SFF_8436_ID field */
+	SFF_8436_STATUS		= 1,	/* 2-bytes status (Table 18) */
+	SFF_8436_INTR_START	= 3,	/* Interrupt flags (Tables 19-21) */
+	SFF_8436_INTR_END	= 21,
+	SFF_8436_MODMON_START	= 22,	/* Module monitors (Table 22 */
+	SFF_8436_TEMP		= 22,	/* Internally measured module temp */
+	SFF_8436_VCC		= 26,	/* Internally mesasure module
+					* supplied voltage */
+	SFF_8436_MODMON_END	= 33,
+	SFF_8436_CHMON_START	= 34,	/* Channel monitors (Table 23) */
+	SFF_8436_RX_CH1_MSB	= 34,	/* Internally measured RX input power */
+	SFF_8436_RX_CH1_LSB	= 35,	/* for channel 1 */
+	SFF_8436_RX_CH2_MSB	= 36,	/* Internally measured RX input power */
+	SFF_8436_RX_CH2_LSB	= 37,	/* for channel 2 */
+	SFF_8436_RX_CH3_MSB	= 38,	/* Internally measured RX input power */
+	SFF_8436_RX_CH3_LSB	= 39,	/* for channel 3 */
+	SFF_8436_RX_CH4_MSB	= 40,	/* Internally measured RX input power */
+	SFF_8436_RX_CH4_LSB	= 41,	/* for channel 4 */
+	SFF_8436_TX_CH1_MSB	= 42,	/* Internally measured TX bias */
+	SFF_8436_TX_CH1_LSB	= 43,	/* for channel 1 */
+	SFF_8436_TX_CH2_MSB	= 44,	/* Internally measured TX bias */
+	SFF_8436_TX_CH2_LSB	= 45,	/* for channel 2 */
+	SFF_8436_TX_CH3_MSB	= 46,	/* Internally measured TX bias */
+	SFF_8436_TX_CH3_LSB	= 47,	/* for channel 3 */
+	SFF_8436_TX_CH4_MSB	= 48,	/* Internally measured TX bias */
+	SFF_8436_TX_CH4_LSB	= 49,	/* for channel 4 */
+	SFF_8436_CHANMON_END	= 81,
+	SFF_8436_CONTROL_START	= 86,	/* Control (Table 24) */
+	SFF_8436_CONTROL_END	= 97,
+	SFF_8436_MASKS_START	= 100,	/* Module/channel masks (Table 25) */
+	SFF_8436_MASKS_END	= 106,
+	SFF_8436_CHPASSWORD	= 119,	/* Password change entry (4 bytes) */
+	SFF_8436_PASSWORD	= 123,	/* Password entry area (4 bytes) */
+	SFF_8436_PAGESEL	= 127,	/* Page select byte */
+};
+
+/* Table 18 - Status Indicators bits */
+/* Byte 1: all bits reserved */
+
+/* Byte 2 bits */
+#define	SFF_8436_STATUS_FLATMEM	(1 << 2)	/* Upper memory flat or paged
+						* 0 = paging, 1=Page 0 only */
+#define	SFF_8436_STATUS_INTL	(1 << 1)	/* Digital state of the intL
+						* Interrupt output pin */
+#define	SFF_8436_STATUS_NOTREADY 1		/* Module has not yet achieved
+						* power up and memory data is not
+						* ready. 0=data is ready */
+/*
+ * Upper page 0 definitions:
+ * Table 29 - Serial ID: Data fields.
+ *
+ * Note that this table is mostly the same as used in SFF-8472.
+ * The only differenee is address shift: +128 bytes.
+ */
+enum {
+	SFF_8436_ID		= 128,  /* Module Type (defined in sff8472.h) */
+	SFF_8436_EXT_ID		= 129,  /* Extended transceiver type
+					 * (Table 31) */
+	SFF_8436_CONNECTOR	= 130,  /* Connector type (Table 32) */
+	SFF_8436_TRANS_START	= 131,  /* Electric or Optical Compatibility
+					 * (Table 33) */
+	SFF_8436_CODE_E1040G	= 131,	/* 10/40G Ethernet Compliance Code */
+	SFF_8436_CODE_SONET	= 132,	/* SONET Compliance codes */
+	SFF_8436_CODE_SATA	= 133,	/* SAS/SATA compliance codes */
+	SFF_8436_CODE_E1G	= 134,	/* Gigabit Ethernet Compliant codes */
+	SFF_8436_CODE_FC_START	= 135,	/* FC link/media/speed */
+	SFF_8436_CODE_FC_END	= 138,
+	SFF_8436_TRANS_END	= 138,
+	SFF_8436_ENCODING	= 139,	/* Encoding Code for high speed
+					* serial encoding algorithm (see
+					* Table 34) */
+	SFF_8436_BITRATE	= 140,	/* Nominal signaling rate, units
+					* of 100MBd. */
+	SFF_8436_RATEID		= 141,	/* Extended RateSelect Compliance
+					* (see Table 35) */
+	SFF_8436_LEN_SMF_KM	= 142,	/* Link length supported for single
+					* mode fiber, units of km */
+	SFF_8436_LEN_OM3	= 143,	/* Link length supported for 850nm
+					* 50um multimode fiber, units of 2 m */
+	SFF_8436_LEN_OM2	= 144, 	/* Link length supported for 50 um
+					* OM2 fiber, units of 1 m */
+	SFF_8436_LEN_OM1	= 145,	/* Link length supported for 1310 nm
+					 * 50um multi-mode fiber, units of 1m*/
+	SFF_8436_LEN_ASM	= 144, /* Link length of passive cable assembly
+					* Length is specified as in the INF
+					* 8074, units of 1m. 0 means this is
+					* not value assembly. Value of 255
+					* means thet the Module supports length
+					* greater than 254 m. */
+	SFF_8436_DEV_TECH	= 147,	/* Device/transmitter technology,
+					* see Table 36/37 */
+	SFF_8436_VENDOR_START	= 148,	/* Vendor name, 16 bytes, padded
+					* right with 0x20 */
+	SFF_8436_VENDOR_END	= 163,
+	SFF_8436_EXTMODCODE	= 164,	/* Extended module code, Table 164 */
+	SFF_8436_VENDOR_OUI_START	= 165 , /* Vendor OUI SFP vendor IEEE
+					* company ID */
+	SFF_8436_VENDOR_OUI_END	= 167,
+	SFF_8436_PN_START 	= 168,	/* Vendor PN, padded right with 0x20 */
+	SFF_8436_PN_END 	= 183,
+	SFF_8436_REV_START 	= 184,	/* Vendor Revision, padded right 0x20 */
+	SFF_8436_REV_END 	= 185,
+	SFF_8436_WAVELEN_START	= 186,	/* Wavelength Laser wavelength
+					* (Passive/Active Cable
+					* Specification Compliance) */
+	SFF_8436_WAVELEN_END	= 189,
+	SFF_8436_MAX_CASE_TEMP	= 190,	/* Allows to specify maximum temp
+					* above 70C. Maximum case temperature is
+					* an 8-bit value in Degrees C. A value
+					*of 0 implies the standard 70C rating.*/
+	SFF_8436_CC_BASE	= 191,	/* CC_BASE Check code for Base ID
+					* Fields (first 63 bytes) */
+	/* Extended ID fields */
+	SFF_8436_OPTIONS_START	= 192, /* Options Indicates which optional
+					* transceiver signals are
+					* implemented (see Table 39) */
+	SFF_8436_OPTIONS_END	= 195,
+	SFF_8436_SN_START 	= 196,	/* Vendor SN, riwght padded with 0x20 */
+	SFF_8436_SN_END 	= 211,
+	SFF_8436_DATE_START	= 212,	/* Vendor’s manufacturing date code
+					* (see Table 40) */
+	SFF_8436_DATE_END	= 219,
+	SFF_8436_DIAG_TYPE	= 220,	/* Diagnostic Monitoring Type
+					* Indicates which type of
+					* diagnostic monitoring is
+					* implemented (if any) in the
+					* transceiver (see Table 41) */
+
+	SFF_8436_ENHANCED	= 221,	/* Enhanced Options Indicates which
+					* optional features are implemented
+					* (if any) in the transceiver
+					* (see Table 42) */
+	SFF_8436_CC_EXT		= 222,	/* Check code for the Extended ID
+					* Fields (bytes 192-222 incl) */
+	SFF_8436_VENDOR_RSRVD_START	= 224,
+	SFF_8436_VENDOR_RSRVD_END	= 255,
+};
+
+