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Date:      Wed, 23 May 2001 12:43:14 -0700
From:      Brooks Davis <brooks@one-eyed-alien.net>
To:        Warner Losh <imp@harmony.village.org>
Cc:        John Reynolds~ <jreynold@sedona.ch.intel.com>, mobile@FreeBSD.ORG
Subject:   Re: TESTIT: Patch to turn pcic_pci into real device
Message-ID:  <20010523124314.A20751@Odin.AC.HMC.Edu>
In-Reply-To: <200105231926.f4NJQkE49174@harmony.village.org>; from imp@harmony.village.org on Wed, May 23, 2001 at 01:26:46PM -0600
References:  <15115.56544.943533.1140@hip186.ch.intel.com> <200105230335.f4N3ZeE44422@harmony.village.org> <15115.56544.943533.1140@hip186.ch.intel.com> <200105231926.f4NJQkE49174@harmony.village.org>

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On Wed, May 23, 2001 at 01:26:46PM -0600, Warner Losh wrote:
> Right now we put all PCI chipsets into a legacy mode where they
> respond to the old 0x3e0 address and then let the ISA probe do its
> magic.  This is broken in several ways, but works well enough to allow
> almost all laptops to work correctly.
>=20
> These patches change that.  They make the pcic driver attach to the
> pci bus and talk to the chips via the memory mapped registers rather
> than the I/O ports on the ISA bus.  This will make a marginal speed
> improvement, but the massive delays in the code likely swamp any speed
> increase that you'll see.

Is this patch supposed to fix the problem that you have to change the
hints for PCI<->PC-card bridges like the Cirrus Logic PD6729s because
they don't have a legacy mode?  We've got an old Gateway Solo at work
that has one of these.

-- Brooks

--=20
Any statement of the form "X is the one, true Y" is FALSE.
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