IBM eServer 346 with 29320 HostRaid 卡做Raid -1 的难题,HELP

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配置：IBM eServer 346 Xeon cpu x 1, 512MB x 2, 73.6G SCSI x2
想在FREEBSD5.4 Release上做RAID-1，现已在SCSI卡里做好了RAID1方式
请教在FREEBSD安装时如何驱动该卡。已查过FREEBSD（hd(4)）支持该SCSI HOSTRaid卡(Adaptec SCSI Card 29320-R)


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NAME
ahd - Adaptec PCI/PCI-X Ultra320 SCSI host adapter driver
CONTENTS
Synopsis
Description
Bugs
See Also
Authors
History

SYNOPSIS
For one or more PCI/PCI-X cards:
.Cd device pci
.Cd device ahd
To compile in debugging code.
.Cd options AHD_DEBUG
.Cd options AHD_DEBUG_OPTS=<bitmask of options>;
.Cd options AHD_REG_PRETTY_PRINT

To configure one or more controllers to assume the target role:
.Cd options AHD_TMODE_ENABLE=<bitmask of units>;

For one or more SCSI busses:
.Cd device scbus

DESCRIPTION
This driver provides access to the SCSI bus(es) connected to Adaptec AIC7901 and AIC7902 host adapter chips. These chips are found on many motherboards as well as the 29320 and 39320 Adaptec SCSI controller cards.
Driver features include support for narrow and wide busses, fast, ultra, ultra2, ultra160, and ultra320 synchronous transfers, packetized transfers, tagged queueing, 512 SCB’s, and target mode.

The "AHD_DEBUG_OPTS" option is used to control which diagnostic messages are printed to the console when "AHD_DEBUG" is enabled. Logically ’or’ the following bits together:




Value   Function
0x0001  Show miscellanious information
0x0002  Show sense data
0x0004  Show Serial EEPROM contents
0x0008  Show bus termination settings
0x0010  Show host memory usage
0x0020  Show SCSI protocol messages
0x0040  Show mode pointer of the chip register window
0x0080  Show selection timeouts
0x0100  Show FIFO usage messages
0x0200  Show Queue Full status
0x0400  Show SCB queue status
0x0800  Show inbound packet information
0x1000  Show S/G list information
0x2000  Enable extra diagnostic code in the firmware



The "AHD_REG_PRETTY_PRINT" option compiles in support for human-readable bit definitions for each register that is printed by the debugging code. However, it also bloats the compiled size of the driver by approximately 215KB.

Individual controllers may be configured to operate in the target role through the "AHD_TMODE_ENABLE" configuration option. The value assigned to this option should be a bitmap of all units where target mode is desired. For example, a value of 0x25, would enable target mode on units 0, 2, and 5. Note that target mode is only supoprted for ultra160 speeds and below.

Per target configuration performed in the SCSI-Select menu, accessible at boot, is honored by this driver. This includes synchronous/asynchronous transfers, maximum synchronous negotiation rate, wide transfers, disconnection, and the host adapter’s SCSI ID.


BUGS
The current generation of 79xx chips do not support target mode in Ultra320 mode. Target mode in general has not been well tested in this driver.

SEE ALSO
ahc(4), cd(4), da(4), sa(4), scsi(4)
AUTHORS
The ahd driver, the AIC7xxx sequencer-code assembler, and the firmware running on the aic79xx chips was written by
.An Justin T. Gibbs . This manual page is based on the ahc(4) manual page.
HISTORY
The ahd driver first appeared in
.Fx 4.7 .

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