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freebsd-skq/sys/cam/scsi/scsi_enc.h
Alexander Motin 53f5ac1310 Improve AHCI Enclosure Management and SES interoperation. 
Since SES specs do not define mechanism to map enclosure slots to SATA
disks, AHCI EM code I written many years ago appeared quite useless,
that always bugged me.  I was thinking whether it was a good idea, but
if LSI HBAs do that, why I shouldn't?

This change introduces simple non-standard mechanism for the mapping
into both AHCI EM and SES code, that makes AHCI EM on capable controllers
(most of Intel's) a first-class SES citizen, allowing it to report disk
physical path to GEOM, show devices inserted into each enclosure slot in
`sesutil map` and `getencstat`, control locate and fault LEDs for specific
devices with `sesutil locate adaX on` and `sesutil fault adaX on`, etc.

I've successfully tested this on Supermicro X10DRH-i motherboard connected
with sideband cable of its S-SATA Mini-SAS connector to SAS815TQ backplane.
It can indicate with LEDs Locate, Fault and Rebuild/Remap SES statuses for
each disk identical to real SES of Supermicro SAS2 backplanes.

MFC after:	2 weeks
2019-06-23 19:05:01 +00:00

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/* $FreeBSD$ */
/*-
* SPDX-License-Identifier: (BSD-2-Clause-FreeBSD OR GPL-2.0)
*
* Copyright (c) 2000 by Matthew Jacob
* 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,
* without modification, immediately at the beginning of the file.
* 2. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* Alternatively, this software may be distributed under the terms of the
* the GNU Public License ("GPL").
*
* 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.
*
*/
#ifndef _SCSI_ENC_H_
#define _SCSI_ENC_H_
#include <cam/scsi/scsi_ses.h>
#define ENCIOC ('s' - 040)
#define ENCIOC_GETNELM _IO(ENCIOC, 1)
#define ENCIOC_GETELMMAP _IO(ENCIOC, 2)
#define ENCIOC_GETENCSTAT _IO(ENCIOC, 3)
#define ENCIOC_SETENCSTAT _IO(ENCIOC, 4)
#define ENCIOC_GETELMSTAT _IO(ENCIOC, 5)
#define ENCIOC_SETELMSTAT _IO(ENCIOC, 6)
#define ENCIOC_GETTEXT _IO(ENCIOC, 7)
#define ENCIOC_INIT _IO(ENCIOC, 8)
#define ENCIOC_GETELMDESC _IO(ENCIOC, 9)
#define ENCIOC_GETELMDEVNAMES _IO(ENCIOC, 10)
#define ENCIOC_GETSTRING _IO(ENCIOC, 11)
#define ENCIOC_SETSTRING _IO(ENCIOC, 12)
#define ENCIOC_GETENCNAME _IO(ENCIOC, 13)
#define ENCIOC_GETENCID _IO(ENCIOC, 14)
/*
* Platform Independent Definitions for enclosure devices.
*/
/*
* SCSI Based Environmental Services Application Defines
*
* Based almost entirely on SCSI-3 ENC Revision 8A specification,
* but slightly abstracted as the underlying device may in fact
* be a SAF-TE or vendor unique device.
*/
/*
* ENC Driver Operations:
* (The defines themselves are platform and access method specific)
*
* ENCIOC_GETNELM
* ENCIOC_GETELMMAP
* ENCIOC_GETENCSTAT
* ENCIOC_SETENCSTAT
* ENCIOC_GETELMSTAT
* ENCIOC_SETELMSTAT
* ENCIOC_INIT
*
*
* An application finds out how many elements an enclosure instance
* is managing by performing a ENCIOC_GETNELM operation. It then
* performs a ENCIOC_GETELMMAP to get the map that contains the
* elment identifiers for all elements (see encioc_element_t below).
* This information is static.
*
* The application may perform ENCIOC_GETELMSTAT operations to retrieve
* status on an element (see the enc_elm_status_t structure below),
* ENCIOC_SETELMSTAT operations to set status for an element.
*
* Similarly, overall enclosure status me be fetched or set via
* ENCIOC_GETENCSTAT or ENCIOC_SETENCSTAT operations (see encioc_enc_status_t
* below).
*
* Readers should note that there is nothing that requires either a set
* or a clear operation to actually latch and do anything in the target.
*
* A ENCIOC_INIT operation causes the enclosure to be initialized.
*/
/* Element Types */
typedef enum {
ELMTYP_UNSPECIFIED = 0x00,
ELMTYP_DEVICE = 0x01,
ELMTYP_POWER = 0x02,
ELMTYP_FAN = 0x03,
ELMTYP_THERM = 0x04,
ELMTYP_DOORLOCK = 0x05,
ELMTYP_ALARM = 0x06,
ELMTYP_ESCC = 0x07, /* Enclosure SCC */
ELMTYP_SCC = 0x08, /* SCC */
ELMTYP_NVRAM = 0x09,
ELMTYP_INV_OP_REASON = 0x0a,
ELMTYP_UPS = 0x0b,
ELMTYP_DISPLAY = 0x0c,
ELMTYP_KEYPAD = 0x0d,
ELMTYP_ENCLOSURE = 0x0e,
ELMTYP_SCSIXVR = 0x0f,
ELMTYP_LANGUAGE = 0x10,
ELMTYP_COMPORT = 0x11,
ELMTYP_VOM = 0x12,
ELMTYP_AMMETER = 0x13,
ELMTYP_SCSI_TGT = 0x14,
ELMTYP_SCSI_INI = 0x15,
ELMTYP_SUBENC = 0x16,
ELMTYP_ARRAY_DEV = 0x17,
ELMTYP_SAS_EXP = 0x18, /* SAS Expander */
ELMTYP_SAS_CONN = 0x19, /* SAS Connector */
ELMTYP_LAST = ELMTYP_SAS_CONN
} elm_type_t;
#define ELM_TYPE_NAMES { \
"Unspecified", \
"Device Slot", \
"Power Supply", \
"Cooling", \
"Temperature Sensors", \
"Door", \
"Audible alarm", \
"Enclosure Services Controller Electronics", \
"SCC Controller Electronics", \
"Nonvolatile Cache", \
"Invalid Operation Reason", \
"Uninterruptible Power Supply", \
"Display", \
"Key Pad Entry", \
"Enclosure", \
"SCSI Port/Transceiver", \
"Language", \
"Communication Port", \
"Voltage Sensor", \
"Current Sensor", \
"SCSI Target Port", \
"SCSI Initiator Port", \
"Simple Subenclosure", \
"Array Device Slot", \
"SAS Expander", \
"SAS Connector" \
}
extern const char *elm_type_names[];
typedef struct encioc_element {
/* Element Index */
unsigned int elm_idx;
/* ID of SubEnclosure containing Element*/
unsigned int elm_subenc_id;
/* Element Type */
elm_type_t elm_type;
} encioc_element_t;
/*
* Overall Enclosure Status
*/
typedef unsigned char encioc_enc_status_t;
/*
* Element Status
*/
typedef struct encioc_elm_status {
unsigned int elm_idx;
unsigned char cstat[4];
} encioc_elm_status_t;
/*
* ENC String structure, for StringIn and StringOut commands; use this with
* the ENCIOC_GETSTRING and ENCIOC_SETSTRING ioctls.
*/
typedef struct encioc_string {
size_t bufsiz; /* IN/OUT: length of string provided/returned */
#define ENC_STRING_MAX 0xffff
uint8_t *buf; /* IN/OUT: string */
} encioc_string_t;
/*============================================================================*/
/*
* SES v2 r20 6.1.10 (pg 39) - Element Descriptor diagnostic page
* Tables 21, 22, and 23
*/
typedef struct encioc_elm_desc {
unsigned int elm_idx; /* IN: elment requested */
uint16_t elm_desc_len; /* IN: buffer size; OUT: bytes written */
char *elm_desc_str; /* IN/OUT: buffer for descriptor data */
} encioc_elm_desc_t;
/*
* ENCIOC_GETELMDEVNAMES:
* ioctl structure to get an element's device names, if available
*/
typedef struct encioc_elm_devnames {
unsigned int elm_idx; /* IN: element index */
size_t elm_names_size;/* IN: size of elm_devnames */
size_t elm_names_len; /* OUT: actual size returned */
/*
* IN/OUT: comma separated list of peripheral driver
* instances servicing this element.
*/
char *elm_devnames;
} encioc_elm_devnames_t;
/* ioctl structure for requesting FC info for a port */
typedef struct encioc_elm_fc_port {
unsigned int elm_idx;
unsigned int port_idx;
struct ses_elm_fc_port port_data;
} encioc_elm_fc_port_t;
/* ioctl structure for requesting SAS info for element phys */
typedef struct encioc_elm_sas_device_phy {
unsigned int elm_idx;
unsigned int phy_idx;
struct ses_elm_sas_device_phy phy_data;
} enioc_elm_sas_phy_t;
/* ioctl structure for requesting SAS info for an expander phy */
typedef struct encioc_elm_sas_expander_phy {
unsigned int elm_idx;
unsigned int phy_idx;
struct ses_elm_sas_expander_phy phy_data;
} encioc_elm_sas_expander_phy_t;
/* ioctl structure for requesting SAS info for a port phy */
typedef struct encioc_elm_sas_port_phy {
unsigned int elm_idx;
unsigned int phy_idx;
struct ses_elm_sas_port_phy phy_data;
} enioc_elm_sas_port_phy_t;
/* ioctl structure for requesting additional status for an element */
typedef struct encioc_addl_status {
unsigned int elm_idx;
union ses_elm_addlstatus_descr_hdr addl_hdr;
union ses_elm_addlstatus_proto_hdr proto_hdr;
} enioc_addl_status_t;
#endif /* _SCSI_ENC_H_ */
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