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* [POWERPC] Add CONFIG_PPC_PSERIES_DEBUG to enable debugging for platforms/pseriesMichael Ellerman2008-04-249-10/+10
| | | | | | | | | | | | | | | | | | | Add a DEBUG config setting which turns on all (most) of the debugging under platforms/pseries. To have this take effect we need to remove all the #undef DEBUG's, in various files. We leave the #undef DEBUG in platforms/pseries/lpar.c, as this enables debugging printks from the low-level hash table routines, and tends to make your system unusable. If you want those enabled you still have to turn them on by hand. Also some of the RAS code has a DEBUG block which causes a functional change, so I've keyed this off a different (non-existant) debug #define. This is only enabled if you have PPC_EARLY_DEBUG enabled also. Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
* [POWERPC] Convert from DBG() to pr_debug() in platforms/pseries/Michael Ellerman2008-04-247-88/+56
| | | | | | | | | | | | | | | In pseries/lpar.c, fix some printf specifier mismatches, and add a newline to one printk. In pseries/rtasd.c add "rtasd" to some messages to make it clear where they're coming from. In pseries/scanlog.c remove the hand-rolled runtime debugging support in there. This file has been largely unchanged for eons, if we need to debug it in future we can recompile. Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
* [POWERPC] Register udbg console early on pseries LPARMichael Ellerman2008-04-241-0/+2
| | | | | | | | | | | | | | On pseries LPAR we can call the udbg routines, and the udbg console very early. So mark the udbg console as safe to call early in boot, and register the udbg console as soon as the udbg routines are hooked up. This allows platforms/pseries code to use printk() and pr_debug() rather than needing to call udbg_printf() directly for early debugging. This is nice because a) it's standard, b) it goes via the printk buffer, and c) you can get printk time stamps. Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
* Merge git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/pci-2.6Linus Torvalds2008-04-211-5/+2
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/pci-2.6: (42 commits) PCI: Change PCI subsystem MAINTAINER PCI: pci-iommu-iotlb-flushing-speedup PCI: pci_setup_bridge() mustn't be __devinit PCI: pci_bus_size_cardbus() mustn't be __devinit PCI: pci_scan_device() mustn't be __devinit PCI: pci_alloc_child_bus() mustn't be __devinit PCI: replace remaining __FUNCTION__ occurrences PCI: Hotplug: fakephp: Return success, not ENODEV, when bus rescan is triggered PCI: Hotplug: Fix leaks in IBM Hot Plug Controller Driver - ibmphp_init_devno() PCI: clean up resource alignment management PCI: aerdrv_acpi.c: remove unneeded NULL check PCI: Update VIA CX700 quirk PCI: Expose PCI VPD through sysfs PCI: iommu: iotlb flushing PCI: simplify quirk debug output PCI: iova RB tree setup tweak PCI: parisc: use generic pci_enable_resources() PCI: ppc: use generic pci_enable_resources() PCI: powerpc: use generic pci_enable_resources() PCI: ia64: use generic pci_enable_resources() ...
| * PCI: add is_added flag to struct pci_devGreg Kroah-Hartman2008-04-201-5/+2
| | | | | | | | | | | | | | | | | | | | This lets us check if the device is really added to the driver core or not, which is what we need when walking some of the bus lists. The flag is there in anticipation of getting rid of the other PCI device list, which is what we used to check in this situation. Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* | [POWERPC] Simplify xics direct/lpar irq_host setupMichael Ellerman2008-04-181-27/+12
| | | | | | | | | | | | | | | | | | | | | | | | The xics code currently has a direct and lpar variant of xics_host_map, the only difference being which irq_chip they use. If we remember which irq_chip we're using we can combine these two routines. That also allows us to have a single irq_host_ops instead of two. Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
* | [POWERPC] Use pseries_setup_i8259_cascade() in pseries_mpic_init_IRQ()Michael Ellerman2008-04-181-41/+2
| | | | | | | | | | | | | | | | | | | | pseries_mpic_init_IRQ() implements the same logic as the xics code did to find the i8259 cascade irq. Now that we've pulled that logic out into pseries_setup_i8259_cascade() we can use it in the mpic code. Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
* | [POWERPC] Turn xics_setup_8259_cascade() into a generic ↵Michael Ellerman2008-04-181-8/+12
| | | | | | | | | | | | | | | | | | | | | | pseries_setup_i8259_cascade() Remove the xics references from xics_setup_8259_cascade(), and merge the good bits from the almost identical logic in pseries_mpic_init_IRQ(). Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
* | [POWERPC] Move xics_setup_8259_cascade() into platforms/pseries/setup.cMichael Ellerman2008-04-183-52/+52
| | | | | | | | | | | | | | | | | | | | The code in xics.c to setup the i8259 cascaded irq handler is not really xics specific, so move it into setup.c - we will clean this up further in a subsequent patch. Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
* | [POWERPC] Always add preferred consoles in platforms/pseries/lpar.cMichael Ellerman2008-04-171-7/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | There is logic in platforms/peries/lpars.c which checks if the user has specified a console on the command line, and refrains from adding a preferred console entry for the hvc/hvsi console if they have. This trips up if you use "netconsole=foo" on the command line, and has the result that you get _only_ the netconsole, because the hvc device is never added as a preferred console. Worse still if you get the netconsole configuration wrong somehow, you end up with no console at all. As it turns out we don't need to worry about checking the command line. If the user has specified "console=foo", then foo will be set as the preferred console when the command line is parsed in start_kernel(), much later than the pseries code, and so the latter setting will take effect. Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
* | [POWERPC] Move prototype for find_udbg_vterm() into a header fileMichael Ellerman2008-04-173-3/+3
| | | | | | | | | | | | | | | | Move the prototype for find_udbg_vterm() into pseries.h, removing it from setup.c. Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
* | [POWERPC] pseries/phyp dump: Reserve a variable amount of space at bootManish Ahuja2008-04-171-0/+9
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This changes the way we calculate how much space to reserve for the pHyp dump. Currently we reserve 256MB only. With this change, the code first checks to see if an amount has been specified on the boot command line with the "phyp_dump_reserve_size" option, and if so, uses that much. Otherwise it computes 5% of total ram and rounds it down to a multiple of 256MB, and uses the larger of that or 256MB. This is for large systems with a lot of memory (10GB or more). The aim is to have more space available for the kernel on reboot on machines with more resources. Although the dump will be collected pretty fast and the memory released really early on allowing the machine to have the full memory available, this alleviates any issues that can be caused by having way too little memory on very very large systems during those few minutes. Signed-off-by: Manish Ahuja <mahuja@us.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
* | Merge branch 'linux-2.6'Paul Mackerras2008-04-141-1/+1
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| * powerpc/pseries/xcis: ansifyAl Viro2008-03-301-1/+1
| | | | | | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | [POWERPC] Convert pci and eeh code to of_device_is_availableNathan Lynch2008-04-071-3/+2
| | | | | | | | | | | | | | | | A couple of places are duplicating the function of of_device_is_available; convert them to use it. Signed-off-by: Nathan Lynch <ntl@pobox.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
* | [POWERPC] Replace remaining __FUNCTION__ occurrencesHarvey Harrison2008-04-012-7/+7
| | | | | | | | | | | | | | | | | | __FUNCTION__ is gcc-specific, use __func__ Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
* | [POWERPC] scanlog_init cleanup and minor fixesNathan Lynch2008-03-261-19/+18
| | | | | | | | | | | | | | | | | | | | | | | | | | | | scanlog_init() could use some love. * properly return -ENODEV if this system doesn't support scan-log-dump * don't printk if scan-log-dump not present; only older systems have it * convert from create_proc_entry() to preferred proc_create() * allocate zeroed data buffer * fix potential memory leak of ent->data on failed create_proc_entry() * simplify control flow Signed-off-by: Nathan Lynch <ntl@pobox.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
* | [POWERPC] pseries: phyp dump: Inform kdump when phyp-dump is loadedManish Ahuja2008-03-261-0/+18
| | | | | | | | | | | | | | | | | | This adds /sys/kernel/phyp_dump_active so that kdump init scripts may look for it and take appropriate action if this file is found. This file is only created when phyp_dump has been registered. Signed-off-by: Manish Ahuja <mahuja@us.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
* | [POWERPC] pseries: phyp dump: Disable phyp-dump through boot-varManish Ahuja2008-03-261-0/+18
| | | | | | | | | | | | | | | | | | | | | | This adds a kernel command line option "phyp_dump", which takes a 0/1 value for disabling/ enabling phyp_dump at boot time. Kdump can use this on cmdline (phyp_dump=0) to disable phyp-dump during boot when enabling itself. This will ensure only one dumping mechanism is active at any given time. Signed-off-by: Manish Ahuja <mahuja@us.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
* | [POWERPC] pseries: phyp dump: Tracking memory range freedManish Ahuja2008-03-261-0/+35
| | | | | | | | | | | | | | | | | | This tracks the size freed. For now it does a simple rudimentary calculation of the ranges freed. The idea is to keep it simple at the external shell script level and send in large chunks for now. Signed-off-by: Manish Ahuja <mahuja@us.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
* | [POWERPC] pseries: phyp dump: Invalidate and print dump areasManish Ahuja2008-03-261-6/+77
| | | | | | | | | | | | | | | | | | | | | | | | This adds routines to a. invalidate dump b. calculate region that is reserved and needs to be freed. This is exported through sysfs interface. Unregister has been removed for now as it wasn't being used. Signed-off-by: Manish Ahuja <mahuja@us.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
* | [POWERPC] pseries: phyp dump: Debugging print routinesManish Ahuja2008-03-261-2/+59
| | | | | | | | | | | | | | | | Provide some basic debugging support. Signed-off-by: Manish Ahuja <mahuja@us.ibm.com> Signed-off-by: Linas Vepstas <linasvepstas@gmail.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
* | [POWERPC] pseries: phyp dump: Register dump areaManish Ahuja2008-03-261-6/+131
| | | | | | | | | | | | | | | | Set up the actual dump header, register it with the hypervisor. Signed-off-by: Manish Ahuja <mahuja@us.ibm.com> Signed-off-by: Linas Vepstas <linasvepstas@gmail.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
* | [POWERPC] pseries: phyp dump: Use sysfs to release reserved memManish Ahuja2008-03-261-5/+76
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Check to see if there actually is data from a previously crashed kernel waiting. If so, allow user-space tools to grab the data (by reading /proc/kcore). When user-space finishes dumping a section, it must release that memory by writing to sysfs. For example, echo "0x40000000 0x10000000" > /sys/kernel/release_region will release 256MB starting at the 1GB. The released memory becomes free for general use. Signed-off-by: Linas Vepstas <linasvepstas@gmail.com> Signed-off-by: Manish Ahuja <mahuja@us.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
* | [POWERPC] pseries: phyp dump: Reserve and release memoryManish Ahuja2008-03-262-0/+104
| | | | | | | | | | | | | | | | | | | | Initial patch for reserving memory in early boot, and freeing it later. If the previous boot had ended with a crash, the reserved memory would contain a copy of the crashed kernel data. Signed-off-by: Manish Ahuja <mahuja@us.ibm.com> Signed-off-by: Linas Vepstas <linasvepstas@gmail.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
* | [POWERPC] Update wait_state_cycles in the VPATony Breeds2008-03-261-0/+4
| | | | | | | | | | | | | | | | | | | | | | | | The hypervisor can look at the value in the wait_state_cycles field of the VPA for an estimate of how busy dedicated processors are. Currently, as the kernel never touches this field, we appear to be 100% busy. This records the duration the kernel is in powersave and passes that to the HV to provide a reasonable indication of utilisation. Signed-off-by: Tony Breeds <tony@bakeyournoodle.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
* | [POWERPC] Add code for removing HPTEs for parts of the linear mappingBadari Pulavarty2008-02-261-0/+15
|/ | | | | | | | | | | | For memory remove, we need to clean up htab mappings for the section of the memory we are removing. This implements support for removing htab bolted mappings for pSeries logical partitions. Other sub-archs may need to implement similar functionality for hotplug memory remove to work on them. Signed-off-by: Badari Pulavarty <pbadari@us.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
* [POWERPC] Fix warning in pseries/power.cStephen Rothwell2008-02-201-1/+1
| | | | | | | | | | | | | | Introduced by commit 79393fc46ede43451a500a132e5de9856f5a4c83 ("kobject: convert pseries/power.c to kobj_attr interface"). sys_create_file takes a "struct attrbute *" not a "struct kobj_addribute *". arch/powerpc/platforms/pseries/power.c: In function 'apo_pm_init': arch/powerpc/platforms/pseries/power.c:78: warning: passing argument 2 of 'sysfs_create_file' from incompatible pointer type Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
* [POWERPC] Update default irq servers when boot cpu is removedNathan Fontenot2008-02-071-32/+45
| | | | | | | | | | | | | | | The xics code does update the default server information when the boot cpu is removed. This patch recognizes when the boot cpu is being removed and updates the appropriate information based on the new 'boot cpu'. Failure to update this information can causes us to leave irqs pinned to cpus that are being removed, especially when removing the boot cpu. The cpu is removed from the kernel, but cpu dlpar remove operations fail since we cannot return the cpu to the hypervisor. Signed-off-by: Nathan Fonteno <nfont@austin.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
* [POWERPC] Remove redundant of_get_cpu_node routineNathan Fontenot2008-02-071-26/+1
| | | | | | | | It appears that xics.c has its own of_get_cpu_node(). Remove this and use the common one from prom.c. Signed-off-by: Nathan Fontenot <nfont@austin.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
* [POWERPC] Split xics_teardown_cpu()Nathan Fontenot2008-02-074-7/+14
| | | | | | | | | | | | | | | | This splits off the kexec path bits of the xics_teardown_cpu() routine into its own xics_kexec_teardown_cpu() routine. With the previous combined routine the CPPR for a cpu that is being removed may have its CPPR reset in the plpar_eoi() call (which explicitly sets the CPPR to a non-zero value). Splitting of the kexec bits of the code prevents this from happening in the cpu remove path. Once again, this does not cause the cpu remove from the kernel to fail, but it does cause cpu dlpar operations to not be able to return the cpu to the hypervisor. Signed-off-by: Nathan Fontenot <nfont@austin.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
* [POWERPC] Update irq descriptor affinityNathan Fontenot2008-02-071-1/+1
| | | | | | | | | | | | | The affinity mask in the virq descriptor needs to be set before we reset the affinity for the virq. Without doing this the call to get the new irq server fails and we end up leaving the virq pinned to the cpu we are removing. This does not fail the cpu remove from the kernel, but it does prevent cpu dlpar remove operations from returning the cpu to the hypervisor. Signed-off-by: Nathan Fontenot <nfont@austin.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
* [POWERPC] arch/powerpc/platforms/pseries: Add missing of_node_putJulia Lawall2008-02-061-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Of_get_parent and of_find_compatible_node do an of_node_get, and thus a corresponding of_code_put is needed in the error case. The problem was found using the following semantic match. (http://www.emn.fr/x-info/coccinelle/) // <smpl> @@ type T,T1,T2; identifier E; statement S; expression x1,x2,x3; int ret; @@ T E; ... * E = \(of_get_parent\|of_find_compatible_node\)(...); if (E == NULL) S ... when != of_node_put(...,(T1)E,...) when != if (E != NULL) { ... of_node_put(...,(T1)E,...); ...} when != x1 = (T1)E when != E = x3; when any if (...) { ... when != of_node_put(...,(T2)E,...) when != if (E != NULL) { ... of_node_put(...,(T2)E,...); ...} when != x2 = (T2)E ( * return; | * return ret; ) } // </smpl> Signed-off-by: Julia Lawall <julia@diku.dk> Cc: Stephen Rothwell <sfr@canb.auug.org.au> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Kumar Gala <galak@gate.crashing.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
* Merge branch 'linux-2.6'Paul Mackerras2008-01-313-27/+21
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| * cpu-hotplug: replace lock_cpu_hotplug() with get_online_cpus()Gautham R Shenoy2008-01-252-8/+8
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Replace all lock_cpu_hotplug/unlock_cpu_hotplug from the kernel and use get_online_cpus and put_online_cpus instead as it highlights the refcount semantics in these operations. The new API guarantees protection against the cpu-hotplug operation, but it doesn't guarantee serialized access to any of the local data structures. Hence the changes needs to be reviewed. In case of pseries_add_processor/pseries_remove_processor, use cpu_maps_update_begin()/cpu_maps_update_done() as we're modifying the cpu_present_map there. Signed-off-by: Gautham R Shenoy <ego@in.ibm.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * driver core: make /sys/power a kobjectGreg Kroah-Hartman2008-01-241-5/+5
| | | | | | | | | | | | | | | | | | /sys/power should not be a kset, that's overkill. This patch renames it to power_kset and fixes up all usages of it in the tree. Cc: Kay Sievers <kay.sievers@vrfy.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
| * kobject: convert pseries/power.c to kobj_attr interfaceGreg Kroah-Hartman2008-01-241-12/+8
| | | | | | | | | | | | | | | | | | | | This makes the code a bit simpler and and gets us one step closer to deleting the deprecated subsys_attr code. Cc: Kay Sievers <kay.sievers@vrfy.org> Cc: Manish Ahuja <mahuja@us.ibm.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
| * kset: convert /sys/power to use kset_createGreg Kroah-Hartman2008-01-241-8/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Dynamically create the kset instead of declaring it statically. We also rename power_subsys to power_kset to catch all users of the variable and we properly export it so that people don't have to guess that it really is present in the system. The pseries code is wierd, why is it createing /sys/power if CONFIG_PM is disabled? Oh well, stupid big boxes ignoring config options... Cc: Kay Sievers <kay.sievers@vrfy.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
| * kobject: remove struct kobj_type from struct ksetGreg Kroah-Hartman2008-01-241-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | We don't need a "default" ktype for a kset. We should set this explicitly every time for each kset. This change is needed so that we can make ksets dynamic, and cleans up one of the odd, undocumented assumption that the kset/kobject/ktype model has. This patch is based on a lot of help from Kay Sievers. Nasty bug in the block code was found by Dave Young <hidave.darkstar@gmail.com> Cc: Kay Sievers <kay.sievers@vrfy.org> Cc: Dave Young <hidave.darkstar@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* | Merge branch 'linux-2.6'Paul Mackerras2008-01-241-0/+2
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| * [POWERPC] Fix boot failure on POWER6Paul Mackerras2008-01-151-1/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Commit 473980a99316c0e788bca50996375a2815124ce1 added a call to clear the SLB shadow buffer before registering it. Unfortunately this means that we clear out the entries that slb_initialize has previously set in there. On POWER6, the hypervisor uses the SLB shadow buffer when doing partition switches, and that means that after the next partition switch, each non-boot CPU has no SLB entries to map the kernel text and data, which causes it to crash. This fixes it by reverting most of 473980a9 and instead clearing the 3rd entry explicitly in slb_initialize. This fixes the problem that 473980a9 was trying to solve, but without breaking POWER6. Signed-off-by: Paul Mackerras <paulus@samba.org>
| * [POWERPC] Fix CPU hotplug when using the SLB shadow bufferMichael Neuling2008-01-112-0/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | Before we register the SLB shadow buffer, we need to invalidate the entries in the buffer, otherwise we can end up stale entries from when we previously offlined the CPU. This does this invalidate as well as unregistering the buffer with PHYP before we offline the cpu. Tested and fixes crashes seen on 970MP (thanks to tonyb) and POWER5. Signed-off-by: Michael Neuling <mikey@neuling.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
* | [POWERPC] eeh.c: Use for_each_child_of_nodeStephen Rothwell2008-01-171-22/+21
| | | | | | | | | | Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
* | [POWERPC] Merge PCI resource fixupsBenjamin Herrenschmidt2007-12-201-8/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | The PCI code in 32 and 64 bits fixes up resources differently. 32 bits uses a header quirk plus handles bridges in pcibios_fixup_bus() while 64 bits does things in various places depending on whether you are using OF probing, using PCI hotplug, etc... This merges those by basically using the 32 bits approach for both, with various tweaks to make 64 bits work with the new approach. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
* | [POWERPC] Push down or eliminate smp_processor_id calls in xics codeMilton Miller2007-12-202-33/+29
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The per-processor interrupt request register and current processor priority register are only accessed on the current cpu. In fact the hypervisor doesn't even let us choose which cpu's registers to access. The only function to use cpu twice is xics_migrate_irqs_away, not a fast path. But we can cache the result of get_hard_processor_id() instead of calling get_hard_smp_processor_id(cpu) in a loop across the call to rtas. Years ago the irq code passed smp_processor_id into get_irq, I thought we might initialize the CPPR third party at boot as an extra measure of saftey, and it made the code symmetric with the qirr (queued interrupt for software generated interrupts), but now it is just extra and sometimes unneeded work to pass it down. Signed-off-by: Milton Miller <miltonm@bga.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
* | [POWERPC] EEH: Avoid a possible NULL pointer dereferenceStephen Rothwell2007-12-111-2/+2
| | | | | | | | | | Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
* | [POWERPC] pci_controller->arch_data really is a struct device_node *Stephen Rothwell2007-12-111-1/+1
| | | | | | | | | | Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
* | [POWERPC] pSeries: Remove dependency on pci_dn bussubnoStephen Rothwell2007-12-111-17/+7
| | | | | | | | | | Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
* | [POWERPC] iommu_free_table doesn't need the device_nodeStephen Rothwell2007-12-111-1/+1
| | | | | | | | | | | | | | | | | | It only needs the iommu_table address. It also makes use of the node name to print error messages. So just pass it the things it needs. This reduces the places that know about the pci_dn by one. Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
* | [POWERPC] EEH: Report errors as soon as possibleLinas Vepstas2007-12-031-7/+8
| | | | | | | | | | | | | | | | | | | | Do not wait for the pci slot status before reporting an error to the device driver. Some systems may take many seconds to report the slot status, and this can confuse unsuspecting device drivers. Signed-off-by: Linas Vepstas <linas@austin.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
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