Bug#253787: marked as done (Debian patch to PCI initialization code on alpha has caused longstanding, widespread brokenness)
Your message dated Wed, 11 Aug 2004 19:47:27 -0700
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and subject line closing these bugs
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>From vorlon@debian.org Thu Jun 10 21:51:20 2004
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Date: Thu, 10 Jun 2004 23:51:19 -0500
From: Steve Langasek <vorlon@debian.org>
To: submit@bugs.debian.org
Subject: Debian patch to PCI initialization code on alpha has caused longstanding, widespread brokenness
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Package: kernel-source-2.4.26
Version: 2.4.26-2
Severity: grave
The Debian kernel image packages for alpha have been wholly unusable on
a large number of hardware configurations for probably half a year now,
dating back to around 2.4.21. Peter De Schrijver has tracked this
problem down to a broken *Debian-specific* patch in the kernel images.
Please immediately revert the patch to arch/alpha/kernel/core_cia.c in
the kernel-source package. There is no documentation in the
kernel-patch changelog or README.Debian that explains what problem this
patch was intended to solve, so I can't guarantee that reverting it
wouldn't cause problems on some machines, but I do know that reverting
it corrects the PCI setup problems on at least two different models of
alpha. I will be publishing test packages shortly with this patch
reverted, to get feedback from other alpha users who both were or were
not able to use the kernel-image-2.4.26 packages.
The reverted patch is attached for reference.
Thanks,
--=20
Steve Langasek
postmodern programmer
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--- arch/alpha/kernel/core_cia.c.debian 2003-09-03 12:26:49.000000000 +0200
+++ arch/alpha/kernel/core_cia.c 2004-06-09 20:54:25.000000000 +0200
@@ -775,22 +775,9 @@
*(vip)CIA_IOC_PCI_W0_MASK =3D (hose->sg_isa->size - 1) & 0xfff00000;
*(vip)CIA_IOC_PCI_T0_BASE =3D virt_to_phys(hose->sg_isa->ptes) >> 2;
=20
- if (cia_rev =3D=3D 1) {
- __direct_map_base =3D 0x40000000;
-
- *(vip)CIA_IOC_PCI_W1_BASE =3D 0x40000000 | 1;
- *(vip)CIA_IOC_PCI_W1_MASK =3D (0x40000000 - 1) & 0xfff00000;
- *(vip)CIA_IOC_PCI_T1_BASE =3D 0 >> 2;
-
- *(vip)CIA_IOC_PCI_W2_BASE =3D 0x80000000 | 1;
- *(vip)CIA_IOC_PCI_W2_MASK =3D (0x40000000 - 1) & 0xfff00000;
- *(vip)CIA_IOC_PCI_T2_BASE =3D 0x40000000 >> 2;
- } else {
*(vip)CIA_IOC_PCI_W2_BASE =3D __direct_map_base | 1;
- *(vip)CIA_IOC_PCI_W2_MASK =3D
- (__direct_map_size - 1) & 0xfff00000;
+ *(vip)CIA_IOC_PCI_W2_MASK =3D (__direct_map_size - 1) & 0xfff00000;
*(vip)CIA_IOC_PCI_T2_BASE =3D 0 >> 2;
- }
=20
/* On PYXIS we have the monster window, selected by bit 40, so
there is no need for window3 to be enabled.
@@ -810,6 +797,7 @@
if (is_pyxis) {
*(vip)CIA_IOC_PCI_W3_BASE =3D 0;
} else if (cia_rev =3D=3D 1) {
+ *(vip)CIA_IOC_PCI_W1_BASE =3D 0;
tbia_window =3D 3;
} else if (max_low_pfn > (0x100000000UL >> PAGE_SHIFT)) {
*(vip)CIA_IOC_PCI_W3_BASE =3D 0;
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Received: (at 253787-done) by bugs.debian.org; 12 Aug 2004 02:47:29 +0000
>From joshk@triplehelix.org Wed Aug 11 19:47:29 2004
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Date: Wed, 11 Aug 2004 19:47:27 -0700
To: 257120-done@bugs.debian.org, 253787-done@bugs.debian.org
Subject: closing these bugs
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From: Joshua Kwan <joshk@triplehelix.org>
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Hello,
Simon Horman closed these bugs, but they were marked as fixed in NMU
because his name was dropped from Uploaders by accident.
So, lest you suddenly remember that this bug has _not_ been fixed as of
kernel-source-2.4.26 2.4.26-5, reopen the bug and remove the fixed tag
=66rom it. For now I'm closing them.
--=20
Joshua Kwan
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