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* powerpc/pseries: Export device tree updating routinesNathan Fontenot2010-10-131-0/+9
| | | | | | | | Export routines associated with adding and removing device tree nodes on pseries needed for device tree updating. Signed-off-by: Nathan Fontenot <nfont@austin.ibm.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
* powerpc/pseries: Make request_ras_irqs() available to other pseries codeMark Nelson2010-05-211-0/+7
| | | | | | | | | | | | | | | | At the moment only the RAS code uses event-sources interrupts (for EPOW events and internal errors) so request_ras_irqs() (which actually requests the event-sources interrupts) is found in ras.c and is static. We want to be able to use event-sources interrupts in other pseries code, so let's rename request_ras_irqs() to request_event_sources_irqs() and move it to event_sources.c. This will be used in an upcoming patch that adds support for IO Event interrupts that come through as event sources. Signed-off-by: Mark Nelson <markn@au1.ibm.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
* [POWERPC] Move prototype for find_udbg_vterm() into a header fileMichael Ellerman2008-04-171-0/+2
| | | | | | | | 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] Fix future firmware feature fixups function failureMichael Neuling2007-07-221-1/+1
| | | | | | | | | | | | | | | | Move firmware feature initialisation from pSeries_init_early to the earlier pSeries_probe_hypertas so they are initialised before firmware feature fixups are applied. Currently firmware feature sections are only used for iSeries which initialises the these features much earlier. This is a bug in waiting on pSeries. Also adds some whitespace fixups. Signed-off-by: Michael Neuling <mikey@neuling.org> Acked-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Paul Mackerras <paulus@samba.org>
* [POWERPC] Rewrite IO allocation & mapping on powerpc64Benjamin Herrenschmidt2007-06-141-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This rewrites pretty much from scratch the handling of MMIO and PIO space allocations on powerpc64. The main goals are: - Get rid of imalloc and use more common code where possible - Simplify the current mess so that PIO space is allocated and mapped in a single place for PCI bridges - Handle allocation constraints of PIO for all bridges including hot plugged ones within the 2GB space reserved for IO ports, so that devices on hotplugged busses will now work with drivers that assume IO ports fit in an int. - Cleanup and separate tracking of the ISA space in the reserved low 64K of IO space. No ISA -> Nothing mapped there. I booted a cell blade with IDE on PIO and MMIO and a dual G5 so far, that's it :-) With this patch, all allocations are done using the code in mm/vmalloc.c, though we use the low level __get_vm_area with explicit start/stop constraints in order to manage separate areas for vmalloc/vmap, ioremap, and PCI IOs. This greatly simplifies a lot of things, as you can see in the diffstat of that patch :-) A new pair of functions pcibios_map/unmap_io_space() now replace all of the previous code that used to manipulate PCI IOs space. The allocation is done at mapping time, which is now called from scan_phb's, just before the devices are probed (instead of after, which is by itself a bug fix). The only other caller is the PCI hotplug code for hot adding PCI-PCI bridges (slots). imalloc is gone, as is the "sub-allocation" thing, but I do beleive that hotplug should still work in the sense that the space allocation is always done by the PHB, but if you unmap a child bus of this PHB (which seems to be possible), then the code should properly tear down all the HPTE mappings for that area of the PHB allocated IO space. I now always reserve the first 64K of IO space for the bridge with the ISA bus on it. I have moved the code for tracking ISA in a separate file which should also make it smarter if we ever are capable of hot unplugging or re-plugging an ISA bridge. This should have a side effect on platforms like powermac where VGA IOs will no longer work. This is done on purpose though as they would have worked semi-randomly before. The idea at this point is to isolate drivers that might need to access those and fix them by providing a proper function to obtain an offset to the legacy IOs of a given bus. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
* [POWERPC] Fix warning on UPStephen Rothwell2007-05-171-2/+2
| | | | | | | | | | arch/powerpc/platforms/pseries/pseries.h:24: warning: return type defaults to 'int' arch/powerpc/platforms/pseries/pseries.h:25: warning: return type defaults to 'int' arch/powerpc/platforms/pseries/pseries.h:24: warning: control reaches end of non-void function arch/powerpc/platforms/pseries/pseries.h:25: warning: control reaches end of non-void function Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
* [POWERPC] pseries: Enabling auto poweron after power is restored.Manish Ahuja2007-02-171-0/+3
| | | | | | | | | | | | During power outages, the UPS notifies the system for a shutdown. In the current setup, it isn't possible to poweron when power is restored. This patch fixes the issue by calling the right ibm,power-off-ups token during such events. It also adds a sysfs interface so userspace can specify whether or not to power on when power is restored. Signed-off-by: Manish Ahuja <ahuja@austin.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
* [POWERPC] Fix cut and paste breakage in arch/powerpc/platforms/pseries/pseries.hMichael Ellerman2007-02-161-2/+2
| | | | | | | | My "cleanup" patch (dce623e0827e8d0ad60ce7f385c3394bf1b0bae0) had a cut and paste error for the !CONFIG_KEXEC case. Fifty lashes for me. Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
* [POWERPC] Cleanup pseries kexec codeMichael Ellerman2007-02-141-0/+8
| | | | | | | | | | | | | Move all the pseries kexec code into one file, platforms/pseries/kexec.c Provide helpers for setting up ppc_md.kexec_cpu_down, so that we don't have to have #ifdef CONFIG_KEXEC in setup.c Move the initialisation of the ppc_md kexec callbacks into an init routine. This is well and truly early enough to cause no change in behaviour, we can't kexec until userspace has given us a kernel to kexec into. Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
* [POWERPC] Cleanup pseries smp initialisation codeMichael Ellerman2007-02-141-0/+8
| | | | | | | | | Move some extern declarations from setup.c into the new pseries.h. While we're at it, provide dummy implementations for !SMP, to avoid cluttering the C file with more #ifdefs. Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
* [POWERPC] Consolidate pseries platform header files into pseries.hMichael Ellerman2007-02-141-0/+20
Following the example of platforms/pasemi, consolidate a couple of tiny header files in platforms/pseries into pseries.h. This gives us a convenient place to put things that need to be available to the platform code, but not public. And hopefully will help people resist the temptation of sticking externs in C files. Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Signed-off-by: Paul Mackerras <paulus@samba.org>