Date: 28 Mar 1996 18:59:43 GMT From: graichen@omega.physik.fu-berlin.de (Thomas Graichen) To: questions@FreeBSD.org Subject: Re: Triton EIDE interface support Message-ID: <4jeniv$34u@mordillo.physik.fu-berlin.de> References: <Pine.BSF.3.91.960328082139.1971D-100000@harlie.bfd.com>
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Eric J. Schwertfeger (ejs@bfd.com) wrote:
: So, between 2.1R, stable, and current, how much support for these
: features are in FreeBSD?
from /sys/i386/conf/LINT (2.1.0-RELEASE):
# ST-506, ESDI, and IDE hard disks: `wdc' and `wd'
#
# NB: ``Enhanced IDE'' is NOT supported at this time.
#
# The flags fields are used to enable the multi-sector I/O and
# the 32BIT I/O modes. The flags may be used in either the controller
# definition or in the individual disk definitions. The controller
# definition is supported for the boot configuration stuff.
#
# Each drive has a 16 bit flags value defined:
# The low 8 bits are the maximum value for the multi-sector I/O,
# where 0xff defaults to the maximum that the drive can handle.
# The high bit of the 16 bit flags (0x8000) allows probing for
# 32 bit transfers.
#
# The flags field for the drives can be specified in the controller
# specification with the low 16 bits for drive 0, and the high 16 bits
# for drive 1.
# e.g.:
#controller wdc0 at isa? port "IO_WD1" bio irq 14 flags 0x00ff8004 vector wdintr
#
# specifies that drive 0 will be allowed to probe for 32 bit transfers and
# a maximum multi-sector transfer of 4 sectors, and drive 1 will not be
# allowed to probe for 32 bit transfers, but will allow multi-sector
# transfers up to the maximum that the drive supports.
i think this is a least a part of what you are looking for (until now there's
no triton DMA support in FreeBSD)
t
--
thomas graichen graichen@mail.physik.fu-berlin.de graichen@FreeBSD.org
perfection is reached, not when there is no longer anything to add, but when
there is no longer anything to take away antoine de saint-exupery
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