Date: Wed, 2 Jun 1999 14:45:37 -0400 (EDT) From: "Matthew N. Dodd" <winter@jurai.net> To: Wilko Bulte <wilko@yedi.iaf.nl> Cc: Doug Rabson <dfr@nlsystems.com>, newton@atdot.dotat.org, current@FreeBSD.ORG Subject: Re: IRQ sharing with newbus Message-ID: <Pine.BSF.4.10.9906021443030.423-100000@sasami.jurai.net> In-Reply-To: <199906012210.AAA04951@yedi.iaf.nl>
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On Wed, 2 Jun 1999, Wilko Bulte wrote: > > For EISA, it should be possible to add RF_SHAREABLE to the > > bus_alloc_resource call (assuming that EISA interrupts are shareable like > > pci interrupts). > > IRRC (it's been years) EISA cards can, but don't have to, support shared > interrupts. I think the SCU/ECU can set this based on what the .CFG > file of the card tells it the hardware can do. > > I once designed a EISA 2 channel SCSI adapter but that was > 9 years ago. > Bitrot.. The point that I continue to try to make is that the new_bus code isn't honoring the RF_SHAREABLE flag. I believe this issue to be outside of the EISA specific bits but have nothing more than idle speculation to back that up as it appears the ISA issue was caused by a different feature of the new_bus code. Most EISA devices can be set to used 'EDGE' or 'LEVEL' triggered IRQs. Most that allow this, only allow sharing with other cards of the same type. -- | Matthew N. Dodd | 78 280Z | 75 164E | 84 245DL | FreeBSD/NetBSD/Sprite/VMS | | winter@jurai.net | This Space For Rent | ix86,sparc,m68k,pmax,vax | | http://www.jurai.net/~winter | Are you k-rad elite enough for my webpage? | To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message
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