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* [PATCH] x86: Move direct PCI scanning functions out of lineAndi Kleen2006-09-26
| | | | | | Saves about 200 bytes of code space. Signed-off-by: Andi Kleen <ak@suse.de>
* [PATCH] Remove outdated comment in x86-64 mmconfig codeAndi Kleen2006-09-26
| | | | | Cc: gregkh@suse.de Signed-off-by: Andi Kleen <ak@suse.de>
* [PATCH] MMCONFIG and new Intel motherboardsAaron Durbin2006-09-26
| | | | | | | | | | | | | | | | | On Sat, Sep 09, 2006 at 04:14:29PM +0200, Andi Kleen wrote: > [patch] Looks reasonable, but probably not for 2.6.18 because this stuff > is already too fragile and it is probably too risky to do any big changes now > since not enough testing time is left. Can you please resubmit > it with proper description and signed-off-by line? I can queue it for .19 then > > -Andi Patch inserts PCI memory mapped config region(s) into the resource map. This will allow for the MMCCONFIG regions to be marked as busy in the iomem address space as well as the regions(s) showing up in /proc/iomem. Signed-off-by: Aaron Durbin <adurbin@google.com> Signed-off-by: Andi Kleen <ak@suse.de>
* [PATCH] i386/x86-64: Only do MCFG e820 check when type 1 worksAndi Kleen2006-09-26
| | | | | | | | | | | | | Needs earlier patch to split type 1 probing from use. This patch should fix the x86 macs where type 1 PCI config space access doesn't work, but MCFG does. They also don't have a usable e820 table so the e820 sanity check failed. Instead assume now that if type 1 doesn't work then MCFG must work and don't do the e820 check. Signed-off-by: Andi Kleen <ak@suse.de>
* [PATCH] i386/x86-64: PCI: split probing and initialization of type 1 config ↵Andi Kleen2006-09-26
| | | | | | | | | | space access First probe if type1/2 accesses work, but then only initialize them at the end. This is useful for a later patch that needs this information inbetween. Signed-off-by: Andi Kleen <ak@suse.de>
* [PATCH] fix bus numbering format in mmconfig warningBrice Goglin2006-09-26
| | | | | | | | Make an mmconfig warning print the bus id with a regular format. Signed-off-by: Brice Goglin <brice@myri.com> Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org>
* Revert mmiocfg heuristics and blacklist changesLinus Torvalds2006-09-19
| | | | | | | | | | | | | | | | | | | This reverts commits 11012d419cfc0e0f78ca356aca03674217910124 and 40dd2d20f220eda1cd0da8ea3f0f9db8971ba237, which allowed us to use the MMIO accesses for PCI config cycles even without the area being marked reserved in the e820 memory tables. Those changes were needed for EFI-environment Intel macs, but broke some newer Intel 965 boards, so for now it's better to revert to our old 2.6.17 behaviour and at least avoid introducing any new breakage. Andi Kleen has a set of patches that work with both EFI and the broken Intel 965 boards, which will be applied once they get wider testing. Cc: Arjan van de Ven <arjan@infradead.org> Cc: Edgar Hucek <hostmaster@ed-soft.at> Cc: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] x86: Disable MMCONFIG on Intel SDV using DMI blacklistAndi Kleen2006-08-30
| | | | | | | | | | | | | As a replacement for the earlier removal of the e820 MCFG check we blacklist the Intel SDV with the original BIOS bug that motivated that check. On those machines don't use MMCONFIG. This also adds a new pci=mmconf parameter to override the blacklist. Cc: Greg KH <gregkh@suse.de> Cc: Arjan van de Ven <arjan@infradead.org> Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] x86: Revert e820 MCFG heuristicsAndi Kleen2006-08-30
| | | | | | | | | | | | | | | | | | | | | The check for the MCFG table being reserved in the e820 map was originally added to detect a broken BIOS in a preproduction Intel SDV. However it also breaks the Apple x86 Macs, which can't supply this properly, but need a working MCFG. With this patch they wouldn't use the MCFG and not work. After some discussion I think it's best to remove the heuristic again. It also failed on some other boxes (although it didn't cause much problems there because old style port access for PCI config space still works as fallback), but the preproduction SDVs can just use pci=nommcfg. Supporting production machines properly is more important. Edgar Hucek did all the debugging work. Cc: Arjan van de Ven <arjan@infradead.org> Cc: Edgar Hucek <hostmaster@ed-soft.at> Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] x86_64: Revert k8-bus.c northbridge access changeAndi Kleen2006-07-29
| | | | | | | | | As Travis Betak points out it accesses the wrong northbridge subfunction now. Switch back to the old code. Cc: "Travis Betak" <betak@mpdtxmail.amd.com> Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] x86_64: Clean and enhance up K8 northbridge access codeAndi Kleen2006-06-26
| | | | | | | | | | | | | | | | | | | - Factor out the duplicated access/cache code into a single file * Shared between i386/x86-64. - Share flush code between AGP and IOMMU * Fix a bug: AGP didn't wait for end of flush before - Drop 8 northbridges limit and allocate dynamically - Add lock to serialize AGP and IOMMU GART flushes - Add PCI ID for next AMD northbridge - Random related cleanups The old K8 NUMA discovery code is unchanged. New systems should all use SRAT for this. Cc: "Navin Boppuri" <navin.boppuri@newisys.com> Cc: Dave Jones <davej@redhat.com> Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] PCI: fix issues with extended conf space when MMCONFIG disabled ↵Chuck Ebbert2006-06-21
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | because of e820 On 15 Jun 2006 03:45:10 +0200, Andi Kleen wrote: > Anyways I would say that if the BIOS can't get MCFG right then > it's likely not been validated on that board and shouldn't be used. According to Petr Vandrovec: ... "What is important (and checked) is address of MMCONFIG reported by MCFG table... Unfortunately code does not bother with printing that address :-( "Another problem is that code has hardcoded that MMCONFIG area is 256MB large. Unfortunately for the code PCI specification allows any power of two between 2MB and 256MB if vendor knows that such amount of busses (from 2 to 128) will be sufficient for system. With notebook it is quite possible that not full 8 bits are implemented for MMCONFIG bus number." So here is a patch. Unfortunately my system still fails the test because it doesn't reserve any part of the MMCONFIG area, but this may fix others. Booted on x86_64, only compiled on i386. x86_64 still remaps the max area (256MB) even though only 2MB is checked... but 2.6.16 had no check at all so it is still better. PCI: reduce size of x86 MMCONFIG reserved area check 1. Print the address of the MMCONFIG area when the test for that area being reserved fails. 2. Only check if the first 2MB is reserved, as that is the minimum. Signed-off-by: Chuck Ebbert <76306.1226@compuserve.com> Acked-by: Arjan van de Ven <arjan@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* [PATCH] x86_64: Fix embarassing typo in mmconfig bus checkAndi Kleen2006-04-11
| | | | | | | | Surprising that it still worked at all with this - yes it was tested. Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] i386/x86-64: Remove checks for value == NULL in PCI config space accessAndi Kleen2006-04-11
| | | | | | | | Nobody should pass NULL here. Could in theory make it a BUG, but the NULL pointer oops will do as well. Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] i386/x86-64: Return defined error value for bad PCI config space ↵Andi Kleen2006-04-09
| | | | | | | | | | | accesses Mostly to get better handling when a extended config space access has to fallback to Type1. Cc: gregkh@suse.de Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] i386/x86_64: Check if MCFG works for the first 16 bussesAndi Kleen2006-04-09
| | | | | | | | | | | | | Previously only the first bus would be checked against Type 1. Why 16? Checking all would need too much memory and we can assume that systems with more than 16 busses have better than average quality BIOS. This is an additional defense against bad MCFG tables. Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] i386/x86-64: Check that MCFG points to an e820 reserved areaArjan van de Ven2006-04-09
| | | | | | | | | | | | | | | | | | This patch introduces a user for the e820_all_mapped function: There have been several machines that don't have a working MMCONFIG, often because of a buggy MCFG table in the ACPI bios. This patch adds a simple sanity check that detects a whole bunch of these cases, and when it detects it, linux now boots rather than crash-and-burns. The accuracy of this detection can in principle be improved if there was a "is this entire range in e820 with THIS attribute", but no such function exist and the complexity needed for this is not really worth it; this simple check already catches most cases anyway. Signed-off-by: Arjan van de Ven <arjan@linux.intel.com> Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] x86_64: {set,clear,test}_bit() related cleanup and pci_mmcfg_init() fixAkinobu Mita2006-03-24
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | While working on these patch set, I found several possible cleanup on x86-64 and ia64. akpm: I stole this from Andi's queue. Not only does it clean up bitops. It also unrelatedly changes the prototype of pci_mmcfg_init() and removes its arch_initcall(). It seems that the wrong two patches got joined together, but this is the one which has been tested. This patch fixes the current x86_64 build error (the pci_mmcfg_init() declaration in arch/i386/pci/pci.h disagrees with the definition in arch/x86_64/pci/mmconfig.c) This also means that x86_64's pci_mmcfg_init() gets called in the same (new) manner as x86's: from arch/i386/pci/init.c:pci_access_init(), rather than via initcall. The bitops cleanups came along for free. All this worked OK in -mm testing (since 2.6.16-rc4-mm1) because x86_64 was tested with both patches applied. Signed-off-by: Akinobu Mita <mita@miraclelinux.com> Signed-off-by: Andi Kleen <ak@suse.de> Cc: Con Kolivas <kernel@kolivas.org> Cc: Jean Delvare <khali@linux-fr.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] PCI: Give PCI config access initialization a defined orderingAndi Kleen2006-03-23
| | | | | | | | | | | | | | I moved it to a separate function which is safer. This avoids problems with the linker reordering them and the less useful PCI config space access methods taking priority over the better ones. Fixes some problems with broken MMCONFIG Cc: Dave Hansen <haveblue@us.ibm.com> Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* [PATCH] arch/x86_64/pci/mmconfig.c NULL noise removalAl Viro2006-02-07
| | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* [PATCH] x86_64: Fix zero mcfg entry workaround on x86-64Andi Kleen2006-02-04
| | | | | | | | | | | I broke this earlier when moving the patch from i386 to x86-64. Need to return the virtual address here, not the physical address. This fixes some boot time crashes on x86-64. Cc: gregkh@suse.de Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] PCI: handle bogus MCFG entriesAndi Kleen2006-01-31
| | | | | | | | | | | Handle more bogus MCFG entries Some Asus P4 boards seem to have broken MCFG tables with only a single entry for busses 0-0. Special case these and assume they mean all busses can be accessed. Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* [PATCH] x86_64: Remove bogus file in arch/x86_64/pciAndi Kleen2006-01-11
| | | | | | | | This was a backup file that somehow made it into the official tree. Never used for anything. Remove. Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] Fix build with CONFIG_PCI_MMCONFIGAndi Kleen2005-12-20
| | | | | | | | | Now needs to include the type 1 functions ("direct") too. Reported by Pavel Roskin <proski@gnu.org> Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] i386,amd64: mmconfig __iomem annotationsAl Viro2005-12-15
| | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] i386/x86-64 Correct for broken MCFG tables on K8 systemsAndi Kleen2005-12-13
| | | | | | | | | | | | | | | | | They report all busses as MMCONFIG capable, but it never works for the internal devices in the CPU's builtin northbridge. It just probes all func 0 devices on bus 0 (the internal northbridge is currently always on bus 0) and if they are not accessible using MCFG they are put into a special fallback bitmap. On systems where it isn't we assume the BIOS vendor supplied correct MCFG. Requires the earlier patch for mmconfig type1 fallback Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] i386/x86-64 Fall back to type 1 access when no entry foundAndi Kleen2005-12-13
| | | | | | | | | | | | | When there is no entry for a bus in MCFG fall back to type1. This is especially important on K8 systems where always some devices can't be accessed using mmconfig (in particular the builtin northbridge doesn't support it for its own devices) Cc: <gregkh@suse.de> Cc: <jgarzik@pobox.com> Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] x86-64: Use ACPI PXM to parse PCI<->node assignmentsAndi Kleen2005-09-12
| | | | | | | Since this is shared code I had to implement it for i386 too Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] x86{-64}: Remove old hack that disabled mmconfig support on AMD systems.Andi Kleen2005-09-12
| | | | | | | | | | Now that Greg implemented MCFG/_SEG support this shouldn't be needed anymore Cc: gregkh@suse.de Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* Merge HEAD from ../from-linus Len Brown2005-08-25
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| * [PATCH] x86_64: Don't oops at boot when empty Opteron node has IOAndi Kleen2005-08-23
| | | | | | | | | | | | | | | | | | | | | | | | | | The code to detect IO links on Opteron would not check if the node had actually memory. This could lead to pci_bus_to_node returning an invalid node, which might cause crashes later when dma_alloc_coherent passes it to page_alloc_node(). The bug has been there forever but for some reason it is causing now crashes. Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | [ACPI] delete CONFIG_ACPI_PCILen Brown2005-08-25
|/ | | | | | | | | | Delete the ability to build an ACPI kernel that does not include PCI support. When such a machine is created and it requires a tuned kernel, send a patch. http://bugzilla.kernel.org/show_bug.cgi?id=1364 Signed-off-by: Len Brown <len.brown@intel.com>
* [PATCH] x86_64: Remove unused variable in k8-bus.cAndi Kleen2005-07-29
| | | | | | | | | arch/x86_64/pci/k8-bus.c: In function `fill_mp_bus_to_cpumask': arch/x86_64/pci/k8-bus.c:32: warning: unused variable `printed' Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] PCI: use the MCFG table to properly access pci devices (x86-64)Greg Kroah-Hartman2005-06-28
| | | | | | | | | | | | Now that we have access to the whole MCFG table, let's properly use it for all pci device accesses (as that's what it is there for, some boxes don't put all the busses into one entry.) If, for some reason, the table is incorrect, we fallback to the "old style" of mmconfig accesses, namely, we just assume the first entry in the table is the one for us, and blindly use it. Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* [PATCH] PCI: add proper MCFG table parsing to ACPI core.Greg Kroah-Hartman2005-06-28
| | | | | | | | | | This patch is the first step in properly handling the MCFG PCI table. It defines the structures properly, and saves off the table so that the pci mmconfig code can access it. It moves the parsing of the table a little later in the boot process, but still before the information is needed. Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* [PATCH] x86/x86_64: pcibus_to_nodeChristoph Lameter2005-06-23
| | | | | | | | | | | | | | | Define pcibus_to_node to be able to figure out which NUMA node contains a given PCI device. This defines pcibus_to_node(bus) in include/linux/topology.h and adjusts the macros for i386 and x86_64 that already provided a way to determine the cpumask of a pci device. x86_64 was changed to not build an array of cpumasks anymore. Instead an array of nodes is build which can be used to generate the cpumask via node_to_cpumask. Signed-off-by: Christoph Lameter <christoph@lameter.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* Linux-2.6.12-rc2v2.6.12-rc2Linus Torvalds2005-04-16
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
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