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* x86/PCI: initialize PCI bus node numbers earlyJesse Barnes2009-09-091-63/+1
| | | | | | | | | | | | | | | | | | | | | | | The current mp_bus_to_node array is initialized only by AMD specific code, since AMD platforms have registers that can be used for determining mode numbers. On new Intel platforms it's necessary to initialize this array as well though, otherwise all PCI node numbers will be 0, when in fact they should be -1 (indicating that I/O isn't tied to any particular node). So move the mp_bus_to_node code into the common PCI code, and initialize it early with a default value of -1. This may be overridden later by arch code (e.g. the AMD code). With this change, PCI consistent memory and other node specific allocations (e.g. skbuff allocs) should occur on the "current" node. If, for performance reasons, applications want to be bound to specific nodes, they should open their devices only after being pinned to the CPU where they'll run, for maximum locality. Acked-by: Yinghai Lu <yinghai@kernel.org> Tested-by: Jesse Brandeburg <jesse.brandeburg@gmail.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
* x86/PCI: get root CRS before scanning childrenYinghai Lu2009-06-301-2/+6
| | | | | | | | | | This allows us to remove adjust_transparent_bridge_resources and give x86_pci_root_bus_res_quirks a chance when _CRS is not used or not there. Acked-by: Gary Hade <garyhade@us.ibm.com> Tested-by: Gary Hade <garyhade@us.ibm.com> Signed-off-by: Yinghai Lu <yinghai@kernel.org> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
* Revert "PCI: use ACPI _CRS data by default"Linus Torvalds2009-06-241-1/+1
| | | | | | | | | | | | | | This reverts commit 9e9f46c44e487af0a82eb61b624553e2f7118f5b. Quoting from the commit message: "At this point, it seems to solve more problems than it causes, so let's try using it by default. It's an easy revert if it ends up causing trouble." And guess what? The _CRS code causes trouble. Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* PCI: use ACPI _CRS data by defaultJesse Barnes2009-06-111-1/+1
| | | | | | | | At this point, it seems to solve more problems than it causes, so let's try using it by default. It's an easy revert if it ends up causing trouble. Reviewed-by: Yinghai Lu <yhlu.kernel@gmail.com> Acked-by: Bjorn Helgaas <bjorn.helgaas@hp.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
* x86/PCI: don't bother with root quirks if _CRS is usedYinghai Lu2009-04-221-0/+4
| | | | | | | It will be overwriten later if _CRS is used, so don't bother to set it. Signed-off-by: Yinghai Lu <yinghai@kernel.org> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
* x86/PCI: set_pci_bus_resources_arch_default cleanupsYinghai Lu2009-04-221-1/+1
| | | | | | | | | | Rename set_pci_bus_resources_arch_default to x86_pci_root_bus_res_quirks, move the weak version from common.c to i386.c, and before calling, make sure it's a root bus. Reviewed-by: Matthew Wilcox <willy@linux.intel.com> Signed-off-by: Yinghai Lu <yinghai@kernel.org> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
* x86, pci: move arch/x86/pci/pci.h to arch/x86/include/asm/pci_x86.hJaswinder Singh Rajput2008-12-291-1/+1
| | | | | | | | | | | | | | | Impact: cleanup Now that arch/x86/pci/pci.h is used in a number of other places as well, move the lowlevel x86 pci definitions into the architecture include files. (not to be confused with the existing arch/x86/include/asm/pci.h file, which provides public details about x86 PCI) Tested on: X86_32_UP, X86_32_SMP and X86_64_SMP Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com> Acked-by: Jesse Barnes <jbarnes@virtuousgeek.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* x86: cleanup in amd_cpu_notify()Robert Richter2008-08-251-1/+1
| | | | | | | small coding style fix. Signed-off-by: Robert Richter <robert.richter@amd.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* x86: fix: make PCI ECS for AMD CPUs hotplug capableRobert Richter2008-08-231-4/+31
| | | | | | | | | | | | | | | | | | | | | Until now, PCI ECS setup was performed at boot time only and for cpus that are enabled then. This patch fixes this and adds cpu hotplug. Tests sequence (check if ECS bit is set when bringing cpu online again): # ( perl -e 'sysseek(STDIN, 0xC001001F, 0)'; hexdump -n 8 -e '2/4 "%08x " "\n"' ) < /dev/cpu/1/msr 00000008 00404010 # ( perl -e 'sysseek(STDOUT, 0xC001001F, 0); print pack "l*", 8, 0x00400010' ) > /dev/cpu/1/msr # ( perl -e 'sysseek(STDIN, 0xC001001F, 0)'; hexdump -n 8 -e '2/4 "%08x " "\n"' ) < /dev/cpu/1/msr 00000008 00400010 # echo 0 > /sys/devices/system/cpu/cpu1/online # echo 1 > /sys/devices/system/cpu/cpu1/online # ( perl -e 'sysseek(STDIN, 0xC001001F, 0)'; hexdump -n 8 -e '2/4 "%08x " "\n"' ) < /dev/cpu/1/msr 00000008 00404010 Reported-by: Yinghai Lu <yhlu.kernel@gmail.com> Signed-off-by: Robert Richter <robert.richter@amd.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* x86: fix: do not run code in amd_bus.c on non-AMD CPUsRobert Richter2008-08-231-3/+16
| | | | | | | | | | | | | | Jan Beulich wrote: > Even worse - this would even try to access the MSR on non-AMD CPUs > (currently probably prevented just by the fact that only AMD ones use > family values of 0x10 or higher). This patch adds cpu vendor check to the postcore_initcalls. Reported-by: Jan Beulich <jbeulich@novell.com> Signed-off-by: Robert Richter <robert.richter@amd.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* generic-ipi: merge fixIngo Molnar2008-07-151-1/+1
| | | | | | | | | fix merge fallout: arch/x86/pci/amd_bus.c: In function ‘enable_pci_io_ecs': arch/x86/pci/amd_bus.c:581: error: too many arguments to function ‘on_each_cpu' Signed-off-by: Ingo Molnar <mingo@elte.hu>
* x86/pci: merge: moving mp_bus_to_node.c to amd_bus.cRobert Richter2008-07-091-3/+29
| | | | | | Signed-off-by: Robert Richter <robert.richter@amd.com> Acked-by: Jesse Barnes <jbarnes@virtuousgeek.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* x86/pci: mp_bus_to_node merge: moving code in amd_bus.cRobert Richter2008-07-091-21/+21
| | | | | | Signed-off-by: Robert Richter <robert.richter@amd.com> Acked-by: Jesse Barnes <jbarnes@virtuousgeek.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* Merge branch 'x86/mpparse' into x86/develIngo Molnar2008-07-081-2/+2
| | | | | | | | | | | Conflicts: arch/x86/Kconfig arch/x86/kernel/io_apic_32.c arch/x86/kernel/setup_64.c arch/x86/mm/init_32.c Signed-off-by: Ingo Molnar <mingo@elte.hu>
* x86: Move PCI IO ECS code to x86/pciRobert Richter2008-07-081-0/+32
| | | | | | | "Form follows function". Code is now where it belongs to. Signed-off-by: Robert Richter <robert.richter@amd.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* x86/pci: Renaming k8-bus_64.c to amd_bus.cRobert Richter2008-07-081-0/+528
The name fits better since this is code not only for K8. Signed-off-by: Robert Richter <robert.richter@amd.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
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