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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