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linux-stable/Documentation/scsi/arcmsr_spec.rst
Randy Dunlap 1d3e21238f scsi: docs: arcmsr: Use a chapter heading for clarity 
Add a chapter heading so that the document sections are not all
at the same level, mucking up the SCSI subsystem contents.

Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Link: https://lore.kernel.org/r/20230518212749.18266-4-rdunlap@infradead.org
Cc: "James E.J. Bottomley" <jejb@linux.ibm.com>
Cc: "Martin K. Petersen" <martin.petersen@oracle.com>
Cc: linux-scsi@vger.kernel.org
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: linux-doc@vger.kernel.org
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2023-05-22 18:36:07 -04:00

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===================
ARECA FIRMWARE SPEC
===================
Usage of IOP331 adapter
=======================
(All In/Out is in IOP331's view)
1. Message 0
------------
- InitThread message and return code
2. Doorbell is used for RS-232 emulation
----------------------------------------
inDoorBell
bit0
data in ready
zDRIVER DATA WRITE OK)
bit1
data out has been read
(DRIVER DATA READ OK)
outDooeBell:
bit0
data out ready
(IOP331 DATA WRITE OK)
bit1
data in has been read
(IOP331 DATA READ OK)
3. Index Memory Usage
---------------------
============ ==========================================
offset 0xf00 for RS232 out (request buffer)
offset 0xe00 for RS232 in (scratch buffer)
offset 0xa00 for inbound message code message_rwbuffer
(driver send to IOP331)
offset 0xa00 for outbound message code message_rwbuffer
(IOP331 send to driver)
============ ==========================================
4. RS-232 emulation
-------------------
Currently 128 byte buffer is used:
============ =====================
1st uint32_t Data length (1--124)
Byte 4--127 Max 124 bytes of data
============ =====================
5. PostQ
--------
All SCSI Command must be sent through postQ:
(inbound queue port)
Request frame must be 32 bytes aligned:
#bit27--bit31
flag for post ccb
#bit0--bit26
real address (bit27--bit31) of post arcmsr_cdb
===== ===================
bit31 == ===============
0 256 bytes frame
1 512 bytes frame
== ===============
bit30 == ==============
0 normal request
1 BIOS request
== ==============
bit29 reserved
bit28 reserved
bit27 reserved
===== ===================
(outbount queue port)
Request reply:
#bit27--bit31
flag for reply
#bit0--bit26
real address (bit27--bit31) of reply arcmsr_cdb
===== =======================================================
bit31 must be 0 (for this type of reply)
bit30 reserved for BIOS handshake
bit29 reserved
bit28 == ===================================================
0 no error, ignore AdapStatus/DevStatus/SenseData
1 Error, error code in AdapStatus/DevStatus/SenseData
== ===================================================
bit27 reserved
===== =======================================================
6. BIOS request
---------------
All BIOS request is the same with request from PostQ
Except:
Request frame is sent from configuration space:
============ ==========================
offset: 0x78 Request Frame (bit30 == 1)
offset: 0x18 writeonly to generate
IRQ to IOP331
============ ==========================
Completion of request::
(bit30 == 0, bit28==err flag)
7. Definition of SGL entry (structure)
--------------------------------------
8. Message1 Out - Diag Status Code (????)
-----------------------------------------
9. Message0 message code
------------------------
====== =================================================================
0x00 NOP
0x01 Get Config
->offset 0xa00 :for outbound message code message_rwbuffer
(IOP331 send to driver)
===================== ==========================================
Signature 0x87974060(4)
Request len 0x00000200(4)
numbers of queue 0x00000100(4)
SDRAM Size 0x00000100(4)-->256 MB
IDE Channels 0x00000008(4)
vendor 40 bytes char
model 8 bytes char
FirmVer 16 bytes char
Device Map 16 bytes char
FirmwareVersion DWORD
- Added for checking of
new firmware capability
===================== ==========================================
0x02 Set Config
->offset 0xa00 :for inbound message code message_rwbuffer
(driver send to IOP331)
========================= ==================
Signature 0x87974063(4)
UPPER32 of Request Frame (4)-->Driver Only
========================= ==================
0x03 Reset (Abort all queued Command)
0x04 Stop Background Activity
0x05 Flush Cache
0x06 Start Background Activity
(re-start if background is halted)
0x07 Check If Host Command Pending
(Novell May Need This Function)
0x08 Set controller time
->offset 0xa00 for inbound message code message_rwbuffer
(driver to IOP331)
====== ==================
byte 0 0xaa <-- signature
byte 1 0x55 <-- signature
byte 2 year (04)
byte 3 month (1..12)
byte 4 date (1..31)
byte 5 hour (0..23)
byte 6 minute (0..59)
byte 7 second (0..59)
====== ==================
====== =================================================================
RS-232 Interface for Areca Raid Controller
==========================================
The low level command interface is exclusive with VT100 terminal
1. Sequence of command execution
--------------------------------
(A) Header
3 bytes sequence (0x5E, 0x01, 0x61)
(B) Command block
variable length of data including length,
command code, data and checksum byte
(C) Return data
variable length of data
2. Command block
----------------
(A) 1st byte
command block length (low byte)
(B) 2nd byte
command block length (high byte)
.. Note:: command block length shouldn't > 2040 bytes,
length excludes these two bytes
(C) 3rd byte
command code
(D) 4th and following bytes
variable length data bytes
depends on command code
(E) last byte
checksum byte (sum of 1st byte until last data byte)
3. Command code and associated data
-----------------------------------
The following are command code defined in raid controller Command
code 0x10--0x1? are used for system level management,
no password checking is needed and should be implemented in separate
well controlled utility and not for end user access.
Command code 0x20--0x?? always check the password,
password must be entered to enable these command::
enum
{
GUI_SET_SERIAL=0x10,
GUI_SET_VENDOR,
GUI_SET_MODEL,
GUI_IDENTIFY,
GUI_CHECK_PASSWORD,
GUI_LOGOUT,
GUI_HTTP,
GUI_SET_ETHERNET_ADDR,
GUI_SET_LOGO,
GUI_POLL_EVENT,
GUI_GET_EVENT,
GUI_GET_HW_MONITOR,
// GUI_QUICK_CREATE=0x20, (function removed)
GUI_GET_INFO_R=0x20,
GUI_GET_INFO_V,
GUI_GET_INFO_P,
GUI_GET_INFO_S,
GUI_CLEAR_EVENT,
GUI_MUTE_BEEPER=0x30,
GUI_BEEPER_SETTING,
GUI_SET_PASSWORD,
GUI_HOST_INTERFACE_MODE,
GUI_REBUILD_PRIORITY,
GUI_MAX_ATA_MODE,
GUI_RESET_CONTROLLER,
GUI_COM_PORT_SETTING,
GUI_NO_OPERATION,
GUI_DHCP_IP,
GUI_CREATE_PASS_THROUGH=0x40,
GUI_MODIFY_PASS_THROUGH,
GUI_DELETE_PASS_THROUGH,
GUI_IDENTIFY_DEVICE,
GUI_CREATE_RAIDSET=0x50,
GUI_DELETE_RAIDSET,
GUI_EXPAND_RAIDSET,
GUI_ACTIVATE_RAIDSET,
GUI_CREATE_HOT_SPARE,
GUI_DELETE_HOT_SPARE,
GUI_CREATE_VOLUME=0x60,
GUI_MODIFY_VOLUME,
GUI_DELETE_VOLUME,
GUI_START_CHECK_VOLUME,
GUI_STOP_CHECK_VOLUME
};
Command description
^^^^^^^^^^^^^^^^^^^
GUI_SET_SERIAL
Set the controller serial#
================ =============================================
byte 0,1 length
byte 2 command code 0x10
byte 3 password length (should be 0x0f)
byte 4-0x13 should be "ArEcATecHnoLogY"
byte 0x14--0x23 Serial number string (must be 16 bytes)
================ =============================================
GUI_SET_VENDOR
Set vendor string for the controller
================ =============================================
byte 0,1 length
byte 2 command code 0x11
byte 3 password length (should be 0x08)
byte 4-0x13 should be "ArEcAvAr"
byte 0x14--0x3B vendor string (must be 40 bytes)
================ =============================================
GUI_SET_MODEL
Set the model name of the controller
================ =============================================
byte 0,1 length
byte 2 command code 0x12
byte 3 password length (should be 0x08)
byte 4-0x13 should be "ArEcAvAr"
byte 0x14--0x1B model string (must be 8 bytes)
================ =============================================
GUI_IDENTIFY
Identify device
================ =============================================
byte 0,1 length
byte 2 command code 0x13
return "Areca RAID Subsystem "
================ =============================================
GUI_CHECK_PASSWORD
Verify password
================ =============================================
byte 0,1 length
byte 2 command code 0x14
byte 3 password length
byte 4-0x?? user password to be checked
================ =============================================
GUI_LOGOUT
Logout GUI (force password checking on next command)
================ =============================================
byte 0,1 length
byte 2 command code 0x15
================ =============================================
GUI_HTTP
HTTP interface (reserved for Http proxy service)(0x16)
GUI_SET_ETHERNET_ADDR
Set the ethernet MAC address
================ =============================================
byte 0,1 length
byte 2 command code 0x17
byte 3 password length (should be 0x08)
byte 4-0x13 should be "ArEcAvAr"
byte 0x14--0x19 Ethernet MAC address (must be 6 bytes)
================ =============================================
GUI_SET_LOGO
Set logo in HTTP
================ =============================================
byte 0,1 length
byte 2 command code 0x18
byte 3 Page# (0/1/2/3) (0xff --> clear OEM logo)
byte 4/5/6/7 0x55/0xaa/0xa5/0x5a
byte 8 TITLE.JPG data (each page must be 2000 bytes)
.. Note:: page0 1st 2 byte must be
actual length of the JPG file
================ =============================================
GUI_POLL_EVENT
Poll If Event Log Changed
================ =============================================
byte 0,1 length
byte 2 command code 0x19
================ =============================================
GUI_GET_EVENT
Read Event
================ =============================================
byte 0,1 length
byte 2 command code 0x1a
byte 3 Event Page (0:1st page/1/2/3:last page)
================ =============================================
GUI_GET_HW_MONITOR
Get HW monitor data
================ =============================================
byte 0,1 length
byte 2 command code 0x1b
byte 3 # of FANs(example 2)
byte 4 # of Voltage sensor(example 3)
byte 5 # of temperature sensor(example 2)
byte 6 # of power
byte 7/8 Fan#0 (RPM)
byte 9/10 Fan#1
byte 11/12 Voltage#0 original value in ``*1000``
byte 13/14 Voltage#0 value
byte 15/16 Voltage#1 org
byte 17/18 Voltage#1
byte 19/20 Voltage#2 org
byte 21/22 Voltage#2
byte 23 Temp#0
byte 24 Temp#1
byte 25 Power indicator (bit0 power#0,
bit1 power#1)
byte 26 UPS indicator
================ =============================================
GUI_QUICK_CREATE
Quick create raid/volume set
================ ==============================================
byte 0,1 length
byte 2 command code 0x20
byte 3/4/5/6 raw capacity
byte 7 raid level
byte 8 stripe size
byte 9 spare
byte 10/11/12/13 device mask (the devices to create raid/volume)
================ ==============================================
This function is removed, application like
to implement quick create function
need to use GUI_CREATE_RAIDSET and GUI_CREATE_VOLUMESET function.
GUI_GET_INFO_R
Get Raid Set Information
================ =============================================
byte 0,1 length
byte 2 command code 0x20
byte 3 raidset#
================ =============================================
::
typedef struct sGUI_RAIDSET
{
BYTE grsRaidSetName[16];
DWORD grsCapacity;
DWORD grsCapacityX;
DWORD grsFailMask;
BYTE grsDevArray[32];
BYTE grsMemberDevices;
BYTE grsNewMemberDevices;
BYTE grsRaidState;
BYTE grsVolumes;
BYTE grsVolumeList[16];
BYTE grsRes1;
BYTE grsRes2;
BYTE grsRes3;
BYTE grsFreeSegments;
DWORD grsRawStripes[8];
DWORD grsRes4;
DWORD grsRes5; // Total to 128 bytes
DWORD grsRes6; // Total to 128 bytes
} sGUI_RAIDSET, *pGUI_RAIDSET;
GUI_GET_INFO_V
Get Volume Set Information
================ =============================================
byte 0,1 length
byte 2 command code 0x21
byte 3 volumeset#
================ =============================================
::
typedef struct sGUI_VOLUMESET
{
BYTE gvsVolumeName[16]; // 16
DWORD gvsCapacity;
DWORD gvsCapacityX;
DWORD gvsFailMask;
DWORD gvsStripeSize;
DWORD gvsNewFailMask;
DWORD gvsNewStripeSize;
DWORD gvsVolumeStatus;
DWORD gvsProgress; // 32
sSCSI_ATTR gvsScsi;
BYTE gvsMemberDisks;
BYTE gvsRaidLevel; // 8
BYTE gvsNewMemberDisks;
BYTE gvsNewRaidLevel;
BYTE gvsRaidSetNumber;
BYTE gvsRes0; // 4
BYTE gvsRes1[4]; // 64 bytes
} sGUI_VOLUMESET, *pGUI_VOLUMESET;
GUI_GET_INFO_P
Get Physical Drive Information
================ =============================================
byte 0,1 length
byte 2 command code 0x22
byte 3 drive # (from 0 to max-channels - 1)
================ =============================================
::
typedef struct sGUI_PHY_DRV
{
BYTE gpdModelName[40];
BYTE gpdSerialNumber[20];
BYTE gpdFirmRev[8];
DWORD gpdCapacity;
DWORD gpdCapacityX; // Reserved for expansion
BYTE gpdDeviceState;
BYTE gpdPioMode;
BYTE gpdCurrentUdmaMode;
BYTE gpdUdmaMode;
BYTE gpdDriveSelect;
BYTE gpdRaidNumber; // 0xff if not belongs to a raid set
sSCSI_ATTR gpdScsi;
BYTE gpdReserved[40]; // Total to 128 bytes
} sGUI_PHY_DRV, *pGUI_PHY_DRV;
GUI_GET_INFO_S
Get System Information
================ =============================================
byte 0,1 length
byte 2 command code 0x23
================ =============================================
::
typedef struct sCOM_ATTR
{
BYTE comBaudRate;
BYTE comDataBits;
BYTE comStopBits;
BYTE comParity;
BYTE comFlowControl;
} sCOM_ATTR, *pCOM_ATTR;
typedef struct sSYSTEM_INFO
{
BYTE gsiVendorName[40];
BYTE gsiSerialNumber[16];
BYTE gsiFirmVersion[16];
BYTE gsiBootVersion[16];
BYTE gsiMbVersion[16];
BYTE gsiModelName[8];
BYTE gsiLocalIp[4];
BYTE gsiCurrentIp[4];
DWORD gsiTimeTick;
DWORD gsiCpuSpeed;
DWORD gsiICache;
DWORD gsiDCache;
DWORD gsiScache;
DWORD gsiMemorySize;
DWORD gsiMemorySpeed;
DWORD gsiEvents;
BYTE gsiMacAddress[6];
BYTE gsiDhcp;
BYTE gsiBeeper;
BYTE gsiChannelUsage;
BYTE gsiMaxAtaMode;
BYTE gsiSdramEcc; // 1:if ECC enabled
BYTE gsiRebuildPriority;
sCOM_ATTR gsiComA; // 5 bytes
sCOM_ATTR gsiComB; // 5 bytes
BYTE gsiIdeChannels;
BYTE gsiScsiHostChannels;
BYTE gsiIdeHostChannels;
BYTE gsiMaxVolumeSet;
BYTE gsiMaxRaidSet;
BYTE gsiEtherPort; // 1:if ether net port supported
BYTE gsiRaid6Engine; // 1:Raid6 engine supported
BYTE gsiRes[75];
} sSYSTEM_INFO, *pSYSTEM_INFO;
GUI_CLEAR_EVENT
Clear System Event
================ =============================================
byte 0,1 length
byte 2 command code 0x24
================ =============================================
GUI_MUTE_BEEPER
Mute current beeper
================ =============================================
byte 0,1 length
byte 2 command code 0x30
================ =============================================
GUI_BEEPER_SETTING
Disable beeper
================ =============================================
byte 0,1 length
byte 2 command code 0x31
byte 3 0->disable, 1->enable
================ =============================================
GUI_SET_PASSWORD
Change password
================ =============================================
byte 0,1 length
byte 2 command code 0x32
byte 3 pass word length ( must <= 15 )
byte 4 password (must be alpha-numerical)
================ =============================================
GUI_HOST_INTERFACE_MODE
Set host interface mode
================ =============================================
byte 0,1 length
byte 2 command code 0x33
byte 3 0->Independent, 1->cluster
================ =============================================
GUI_REBUILD_PRIORITY
Set rebuild priority
================ =============================================
byte 0,1 length
byte 2 command code 0x34
byte 3 0/1/2/3 (low->high)
================ =============================================
GUI_MAX_ATA_MODE
Set maximum ATA mode to be used
================ =============================================
byte 0,1 length
byte 2 command code 0x35
byte 3 0/1/2/3 (133/100/66/33)
================ =============================================
GUI_RESET_CONTROLLER
Reset Controller
================ =============================================
byte 0,1 length
byte 2 command code 0x36
* Response with VT100 screen (discard it)
================ =============================================
GUI_COM_PORT_SETTING
COM port setting
================ =================================================
byte 0,1 length
byte 2 command code 0x37
byte 3 0->COMA (term port),
1->COMB (debug port)
byte 4 0/1/2/3/4/5/6/7
(1200/2400/4800/9600/19200/38400/57600/115200)
byte 5 data bit
(0:7 bit, 1:8 bit must be 8 bit)
byte 6 stop bit (0:1, 1:2 stop bits)
byte 7 parity (0:none, 1:off, 2:even)
byte 8 flow control
(0:none, 1:xon/xoff, 2:hardware => must use none)
================ =================================================
GUI_NO_OPERATION
No operation
================ =============================================
byte 0,1 length
byte 2 command code 0x38
================ =============================================
GUI_DHCP_IP
Set DHCP option and local IP address
================ =============================================
byte 0,1 length
byte 2 command code 0x39
byte 3 0:dhcp disabled, 1:dhcp enabled
byte 4/5/6/7 IP address
================ =============================================
GUI_CREATE_PASS_THROUGH
Create pass through disk
================ =============================================
byte 0,1 length
byte 2 command code 0x40
byte 3 device #
byte 4 scsi channel (0/1)
byte 5 scsi id (0-->15)
byte 6 scsi lun (0-->7)
byte 7 tagged queue (1 enabled)
byte 8 cache mode (1 enabled)
byte 9 max speed (0/1/2/3/4,
async/20/40/80/160 for scsi)
(0/1/2/3/4, 33/66/100/133/150 for ide )
================ =============================================
GUI_MODIFY_PASS_THROUGH
Modify pass through disk
================ =============================================
byte 0,1 length
byte 2 command code 0x41
byte 3 device #
byte 4 scsi channel (0/1)
byte 5 scsi id (0-->15)
byte 6 scsi lun (0-->7)
byte 7 tagged queue (1 enabled)
byte 8 cache mode (1 enabled)
byte 9 max speed (0/1/2/3/4,
async/20/40/80/160 for scsi)
(0/1/2/3/4, 33/66/100/133/150 for ide )
================ =============================================
GUI_DELETE_PASS_THROUGH
Delete pass through disk
================ =============================================
byte 0,1 length
byte 2 command code 0x42
byte 3 device# to be deleted
================ =============================================
GUI_IDENTIFY_DEVICE
Identify Device
================ =============================================
byte 0,1 length
byte 2 command code 0x43
byte 3 Flash Method
(0:flash selected, 1:flash not selected)
byte 4/5/6/7 IDE device mask to be flashed
.. Note:: no response data available
================ =============================================
GUI_CREATE_RAIDSET
Create Raid Set
================ =============================================
byte 0,1 length
byte 2 command code 0x50
byte 3/4/5/6 device mask
byte 7-22 raidset name (if byte 7 == 0:use default)
================ =============================================
GUI_DELETE_RAIDSET
Delete Raid Set
================ =============================================
byte 0,1 length
byte 2 command code 0x51
byte 3 raidset#
================ =============================================
GUI_EXPAND_RAIDSET
Expand Raid Set
================ =============================================
byte 0,1 length
byte 2 command code 0x52
byte 3 raidset#
byte 4/5/6/7 device mask for expansion
byte 8/9/10 (8:0 no change, 1 change, 0xff:terminate,
9:new raid level,
10:new stripe size
0/1/2/3/4/5->4/8/16/32/64/128K )
byte 11/12/13 repeat for each volume in the raidset
================ =============================================
GUI_ACTIVATE_RAIDSET
Activate incomplete raid set
================ =============================================
byte 0,1 length
byte 2 command code 0x53
byte 3 raidset#
================ =============================================
GUI_CREATE_HOT_SPARE
Create hot spare disk
================ =============================================
byte 0,1 length
byte 2 command code 0x54
byte 3/4/5/6 device mask for hot spare creation
================ =============================================
GUI_DELETE_HOT_SPARE
Delete hot spare disk
================ =============================================
byte 0,1 length
byte 2 command code 0x55
byte 3/4/5/6 device mask for hot spare deletion
================ =============================================
GUI_CREATE_VOLUME
Create volume set
================ =============================================
byte 0,1 length
byte 2 command code 0x60
byte 3 raidset#
byte 4-19 volume set name
(if byte4 == 0, use default)
byte 20-27 volume capacity (blocks)
byte 28 raid level
byte 29 stripe size
(0/1/2/3/4/5->4/8/16/32/64/128K)
byte 30 channel
byte 31 ID
byte 32 LUN
byte 33 1 enable tag
byte 34 1 enable cache
byte 35 speed
(0/1/2/3/4->async/20/40/80/160 for scsi)
(0/1/2/3/4->33/66/100/133/150 for IDE )
byte 36 1 to select quick init
================ =============================================
GUI_MODIFY_VOLUME
Modify volume Set
================ =============================================
byte 0,1 length
byte 2 command code 0x61
byte 3 volumeset#
byte 4-19 new volume set name
(if byte4 == 0, not change)
byte 20-27 new volume capacity (reserved)
byte 28 new raid level
byte 29 new stripe size
(0/1/2/3/4/5->4/8/16/32/64/128K)
byte 30 new channel
byte 31 new ID
byte 32 new LUN
byte 33 1 enable tag
byte 34 1 enable cache
byte 35 speed
(0/1/2/3/4->async/20/40/80/160 for scsi)
(0/1/2/3/4->33/66/100/133/150 for IDE )
================ =============================================
GUI_DELETE_VOLUME
Delete volume set
================ =============================================
byte 0,1 length
byte 2 command code 0x62
byte 3 volumeset#
================ =============================================
GUI_START_CHECK_VOLUME
Start volume consistency check
================ =============================================
byte 0,1 length
byte 2 command code 0x63
byte 3 volumeset#
================ =============================================
GUI_STOP_CHECK_VOLUME
Stop volume consistency check
================ =============================================
byte 0,1 length
byte 2 command code 0x64
================ =============================================
4. Returned data
----------------
(A) Header
3 bytes sequence (0x5E, 0x01, 0x61)
(B) Length
2 bytes
(low byte 1st, excludes length and checksum byte)
(C)
status or data:
1) If length == 1 ==> 1 byte status code::
#define GUI_OK 0x41
#define GUI_RAIDSET_NOT_NORMAL 0x42
#define GUI_VOLUMESET_NOT_NORMAL 0x43
#define GUI_NO_RAIDSET 0x44
#define GUI_NO_VOLUMESET 0x45
#define GUI_NO_PHYSICAL_DRIVE 0x46
#define GUI_PARAMETER_ERROR 0x47
#define GUI_UNSUPPORTED_COMMAND 0x48
#define GUI_DISK_CONFIG_CHANGED 0x49
#define GUI_INVALID_PASSWORD 0x4a
#define GUI_NO_DISK_SPACE 0x4b
#define GUI_CHECKSUM_ERROR 0x4c
#define GUI_PASSWORD_REQUIRED 0x4d
2) If length > 1:
data block returned from controller
and the contents depends on the command code
(E) Checksum
checksum of length and status or data byte
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