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2010-02-19powerpc: Convert beatic_irq_mask_lock to raw_spinlockThomas Gleixner
beatic_irq_mask_lock needs to be a real spinlock in RT. Convert it to raw_spinlock. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2010-02-19powerpc: Convert nv_lock to raw_spinlockThomas Gleixner
nv_lock needs to be a real spinlock in RT. Convert it to raw_spinlock. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2010-02-19Merge commit 'gcl/next' into nextBenjamin Herrenschmidt
2010-02-17powerpc/85xx: Add NOR, LEDs and PIB support for MPC8568E-MDS boardsAnton Vorontsov
This patch adds NOR Flash, LEDs and PIB support for MPC8568E-MDS boards. Plus, move bcsr node into localbus node, and add bcsr5 gpio-controller node. Some platform code modifications were also needed. Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2010-02-17powerpc: Remove whitespace in irq chip name fieldsAnton Blanchard
Now we use printf style alignment there is no need to manually space these fields. Signed-off-by: Anton Blanchard <anton@samba.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2010-02-17powerpc: Reduce footprint of xics_ipi_structAnton Blanchard
Right now we allocate a cacheline sized NR_CPUS array for xics IPI communication. Use DECLARE_PER_CPU_SHARED_ALIGNED to put it in percpu data in its own cacheline since it is written to by other cpus. On a kernel with NR_CPUS=1024, this saves quite a lot of memory: text data bss dec hex filename 8767779 2944260 1505724 13217763 c9afe3 vmlinux.irq_cpustat 8767555 2813444 1505724 13086723 c7b003 vmlinux.xics A saving of around 128kB. Signed-off-by: Anton Blanchard <anton@samba.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2010-02-17powerpc/eeh: Fix a bug when pci structure is nullBreno Leitao
During a EEH recover, the pci_dev structure can be null, mainly if an eeh event is detected during cpi config operation. In this case, the pci_dev will not be known (and will be null) the kernel will crash with the following message: Unable to handle kernel paging request for data at address 0x000000a0 Faulting instruction address: 0xc00000000006b8b4 Oops: Kernel access of bad area, sig: 11 [#1] NIP [c00000000006b8b4] .eeh_event_handler+0x10c/0x1a0 LR [c00000000006b8a8] .eeh_event_handler+0x100/0x1a0 Call Trace: [c0000003a80dff00] [c00000000006b8a8] .eeh_event_handler+0x100/0x1a0 [c0000003a80dff90] [c000000000031f1c] .kernel_thread+0x54/0x70 The bug occurs because pci_name() tries to access a null pointer. This patch just guarantee that pci_name() is not called on Null pointers. Signed-off-by: Breno Leitao <leitao@linux.vnet.ibm.com> Signed-off-by: Linas Vepstas <linasvepstas@gmail.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2010-02-17Merge commit 'origin/master' into nextBenjamin Herrenschmidt
2010-02-16powerpc/mpc5121: create and register NFC deviceAnatolij Gustschin
Instantiate NAND Flash Controller device if it's description is found in the device tree. Signed-off-by: Anatolij Gustschin <agust@denx.de> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2010-02-16powerpc/mpc5121: Add machine restart supportAnatolij Gustschin
Add reset module registers representation and machine restart callback for mpc5121 platform. Signed-off-by: Piotr Ziecik <kosmo@semihalf.com> Signed-off-by: Wolfgang Denk <wd@denx.de> Signed-off-by: Anatolij Gustschin <agust@denx.de> Reviewed-by: Wolfram Sang <w.sang@pengutronix.de> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2010-02-16powerpc/mpc5121: avoid using arch_initcall for clock initAnatolij Gustschin
Move mpc5121_clk_init() call to platform init code so it won't get called on non-5121 platforms on a multiplatform kernel. Signed-off-by: Anatolij Gustschin <agust@denx.de> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2010-02-09powerpc: Remove trailing space in messagesFrans Pop
Signed-off-by: Frans Pop <elendil@planet.nl> Cc: linuxppc-dev@ozlabs.org Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Paul Mackerras <paulus@samba.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2010-02-09powerpc/pseries: Quieten cede latency printkAnton Blanchard
The cede latency stuff is relatively new and we don't need to complain about it not working on older firmware. Signed-off-by: Anton Blanchard <anton@samba.org> Acked-by: Balbir Singh <balbir@linux.vnet.ibm.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2010-02-09arch/powerpc: Fix continuation line formatsJoe Perches
String constants that are continued on subsequent lines with \ are not good. Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2010-02-09powerpc/pseries: Hypervisor call tracepoints hcall_stats touchupWill Schmidt
The tb_total and purr_total values reported via the hcall_stats code should be cumulative, rather than being replaced by the latest delta tb or purr value. Tested-by: Will Schmidt <will_schmidt@vnet.ibm.com> Signed-off-by: Will Schmidt <will_schmidt@vnet.ibm.com> Acked-by: Anton Blanchard <anton@samba.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2010-02-08powerpc/pseries: Fix kexec regression caused by CPPR trackingMark Nelson
The code to track the CPPR values added by commit 49bd3647134ea47420067aea8d1401e722bf2aac ("powerpc/pseries: Track previous CPPR values to correctly EOI interrupts") broke kexec on pseries because the kexec code in xics.c calls xics_set_cpu_priority() before the IPI has been EOI'ed. This wasn't a problem previously but it now triggers a BUG_ON in xics_set_cpu_priority() because os_cppr->index isn't 0. Fix this problem by setting the index on the CPPR stack to 0 before calling xics_set_cpu_priority() in xics_teardown_cpu(). Also make it clear that we only want to set the priority when there's just one CPPR value in the stack, and enforce it by updating the value of os_cppr->stack[0] rather than os_cppr->stack[os_cppr->index]. While we're at it change the BUG_ON to a WARN_ON. Reported-by: Anton Blanchard <anton@samba.org> Signed-off-by: Mark Nelson <markn@au1.ibm.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2010-02-03powerpc/85xx: Fix SMP when "cpu-release-addr" is in lowmemPeter Tyser
Recent U-Boot commit 5ccd29c3679b3669b0bde5c501c1aa0f325a7acb caused the "cpu-release-addr" device tree property to contain the physical RAM location that secondary cores were spinning at. Previously, the "cpu-release-addr" property contained a value referencing the boot page translation address range of 0xfffffxxx, which then indirectly accessed RAM. The "cpu-release-addr" is currently ioremapped and the secondary cores kicked. However, due to the recent change in "cpu-release-addr", it sometimes points to a memory location in low memory that cannot be ioremapped. For example on a P2020-based board with 512MB of RAM the following error occurs on bootup: <...> mpic: requesting IPIs ... __ioremap(): phys addr 0x1ffff000 is RAM lr c05df9a0 Unable to handle kernel paging request for data at address 0x00000014 Faulting instruction address: 0xc05df9b0 Oops: Kernel access of bad area, sig: 11 [#1] SMP NR_CPUS=2 P2020 RDB Modules linked in: <... eventual kernel panic> Adding logic to conditionally ioremap or access memory directly resolves the issue. Signed-off-by: Peter Tyser <ptyser@xes-inc.com> Signed-off-by: Nate Case <ncase@xes-inc.com> Reported-by: Dipen Dudhat <B09055@freescale.com> Tested-by: Dipen Dudhat <B09055@freescale.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2010-02-01powerpc/pseries: Fix xics build without CONFIG_SMPBenjamin Herrenschmidt
desc->affinity doesn't exit in that case. Let's use a macro for the UP variant of get_irq_server(), it's the easiest way, avoids evaluating arguments. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2010-01-15powerpc: Move cpu hotplug driver lock from pseries to powerpcNathan Fontenot
Move the defintion and lock helper routines for the cpu hotplug driver lock from pseries to powerpc code to avoid build breaks for platforms other than pseries that use cpu hotplug. Signed-off-by: Nathan Fontenot <nfont@austin.ibm.com> Acked-by: Michael Ellerman <michael@ellerman.id.au> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2010-01-15powerpc/iseries: Initialise on-stack completionMichael Ellerman
get_viotape_info() declares a vio_waitevent on the stack, which contains a completion, but never initialises the completion. I have no idea how this ever worked, and on recent kernels it causes an oops in handle_tape_event() when we access the non-initialised completion. Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Acked-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2010-01-15powerpc: Use helpers for rlimitsJiri Slaby
Make sure compiler won't do weird things with limits. E.g. fetching them twice may return 2 different values after writable limits are implemented. I.e. either use rlimit helpers added in 3e10e716abf3c71bdb5d86b8f507f9e72236c9cd or ACCESS_ONCE if not applicable. Signed-off-by: Jiri Slaby <jslaby@suse.cz> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Paul Mackerras <paulus@samba.org> Cc: linuxppc-dev@ozlabs.org Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2010-01-15powerpc/pseries: Fix dlpar compile warning without CONFIG_PROC_DEVICETREEFUJITA Tomonori
cc1: warnings being treated as errors arch/powerpc/platforms/pseries/dlpar.c: In function 'dlpar_attach_node': arch/powerpc/platforms/pseries/dlpar.c:239: error: unused variable 'ent' arch/powerpc/platforms/pseries/dlpar.c: In function 'dlpar_detach_node': arch/powerpc/platforms/pseries/dlpar.c:271: error: unused variable 'prop' arch/powerpc/platforms/pseries/dlpar.c:270: error: unused variable 'parent' make[3]: *** [arch/powerpc/platforms/pseries/dlpar.o] Error 1 Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2010-01-15powerpc/pseries: Fix xics interrupt affinityAnton Blanchard
Commit 57b150cce8e004ddd36330490a68bfb59b7271e9 (irq: only update affinity if ->set_affinity() is sucessfull) broke xics irq affinity. We need to use the cpumask passed in, instead of accessing ->affinity directly. Signed-off-by: Anton Blanchard <anton@samba.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2009-12-21powerpc/gc/wii: Remove get_irq_desc()Albert Herranz
Fix the following build failures: arch/powerpc/platforms/embedded6xx/flipper-pic.c: In function 'flipper_pic_map': arch/powerpc/platforms/embedded6xx/flipper-pic.c:105: error: implicit declaration of function 'get_irq_desc' arch/powerpc/platforms/embedded6xx/hlwd-pic.c: In function 'hlwd_pic_map': arch/powerpc/platforms/embedded6xx/hlwd-pic.c:98: error: implicit declaration of function 'get_irq_desc' These failures are caused by the changes introduced in commit "powerpc: Remove get_irq_desc()". The reason these drivers were not updated is that they weren't merged yet. Signed-off-by: Albert Herranz <albert_herranz@yahoo.es> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2009-12-21powerpc/gc/wii: hlwd-pic: convert irq_desc.lock to raw_spinlockAlbert Herranz
Fix the following build failures: arch/powerpc/platforms/embedded6xx/hlwd-pic.c: In function 'hlwd_pic_irq_cascade': arch/powerpc/platforms/embedded6xx/hlwd-pic.c:135: error: passing argument 1 of 'spin_lock' from incompatible pointer type arch/powerpc/platforms/embedded6xx/hlwd-pic.c:137: error: passing argument 1 of 'spin_unlock' from incompatible pointer type arch/powerpc/platforms/embedded6xx/hlwd-pic.c:145: error: passing argument 1 of 'spin_lock' from incompatible pointer type arch/powerpc/platforms/embedded6xx/hlwd-pic.c:149: error: passing argument 1 of 'spin_unlock' from incompatible pointer type These failures are caused by the changes introduced in commit "genirq: Convert irq_desc.lock to raw_spinlock". The reason this driver was not updated is that it wasn't merged yet. Signed-off-by: Albert Herranz <albert_herranz@yahoo.es> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2009-12-21Merge commit 'kumar/next' into mergeBenjamin Herrenschmidt
2009-12-18powerpc/gamecube/wii: Fix off-by-one error in ugecon/usbgecko_udbgAlbert Herranz
The retry logic in ug_putc() is broken. If the TX fifo is not ready and the counter runs out it will have a value of -1 and no transfer should be attempted. Also, a counter with a value of 0 means that the TX fifo got ready in the last try and the transfer should be attempted. Reported-by: "Juha Leppanen" <juha_motorsportcom@luukku.com> Signed-off-by: "Juha Leppanen" <juha_motorsportcom@luukku.com> Signed-off-by: Albert Herranz <albert_herranz@yahoo.es> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2009-12-18powerpc/iseries: use DECLARE_COMPLETION_ONSTACK for non-constant completionYong Zhang
The _ONSTACK variant should be used for on-stack completion, otherwise it will break lockdep. Signed-off-by: Yong Zhang <yong.zhang0@gmail.com> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Paul Mackerras <paulus@samba.org> Cc: linuxppc-dev@ozlabs.org Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2009-12-18powerpc/pseries: Make declarations of cpu_hotplug_driver_lock() ANSI compatible.Gautham R Shenoy
And add the __acquires() and __releases() annotations, while at it. Signed-off-by: Gautham R Shenoy <ego@in.ibm.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2009-12-18powerpc/pseries: Don't panic when H_PROD fails during cpu-online.Gautham R Shenoy
If an online-attempt on a CPU which has been offlined using H_CEDE with an appropriate cede latency hint fails, don't panic. Instead print the error message and let the __cpu_up() code notify the CPU Hotplug framework of the failure, which in turn can notify the other subsystem through CPU_UP_CANCELED. Signed-off-by: Gautham R Shenoy <ego@in.ibm.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2009-12-18powerpc/pseries: Select XICS and PCI_MSI PSERIESMel Gorman
It's possible to set CONFIG_XICS without CONFIG_PCI_MSI. When that happens, the kernel fails to build with arch/powerpc/platforms/built-in.o: In function `.xics_startup': xics.c:(.text+0x12f60): undefined reference to `.unmask_msi_irq' make: *** [.tmp_vmlinux1] Error 1 Furthermore, as noted by Benjamin Herrenschmidt, "CONFIG_XICS should be made invisible and selected by PSERIES." This patch fixes PSERIES to select both options Signed-off-by: Mel Gorman <mel[at]csn.ul.ie> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2009-12-18powerpc/85xx: Wrong variable returned on errorRoel Kluin
The wrong variable was returned in the case of an error. Signed-off-by: Roel Kluin <roel.kluin@gmail.com> Cc: Kumar Gala <galak@kernel.crashing.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2009-12-18powerpc/iseries: Convert to proc_fopsAlexey Dobriyan
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Michael Ellerman <michael@ellerman.id.au> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2009-12-18powerpc: Make the CMM memory hotplug awareRobert Jennings
The Collaborative Memory Manager (CMM) module allocates individual pages over time that are not migratable. On a long running system this can severely impact the ability to find enough pages to support a hotplug memory remove operation. This patch adds a memory isolation notifier and a memory hotplug notifier. The memory isolation notifier will return the number of pages found in the range specified. This is used to determine if all of the used pages in a pageblock are owned by the balloon (or other entities in the notifier chain). The hotplug notifier will free pages in the range which is to be removed. The priority of this hotplug notifier is low so that it will be called near last, this helps avoids removing loaned pages in operations that fail due to other handlers. CMM activity will be halted when hotplug remove operations are active and resume activity after a delay period to allow the hypervisor time to adjust. Signed-off-by: Robert Jennings <rcj@linux.vnet.ibm.com> Cc: Mel Gorman <mel@csn.ul.ie> Cc: Ingo Molnar <mingo@elte.hu> Cc: Brian King <brking@linux.vnet.ibm.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Gerald Schaefer <geralds@linux.vnet.ibm.com> Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2009-12-17Merge branch 'for-33' of git://repo.or.cz/linux-kbuildLinus Torvalds
* 'for-33' of git://repo.or.cz/linux-kbuild: (29 commits) net: fix for utsrelease.h moving to generated gen_init_cpio: fixed fwrite warning kbuild: fix make clean after mismerge kbuild: generate modules.builtin genksyms: properly consider EXPORT_UNUSED_SYMBOL{,_GPL}() score: add asm/asm-offsets.h wrapper unifdef: update to upstream revision 1.190 kbuild: specify absolute paths for cscope kbuild: create include/generated in silentoldconfig scripts/package: deb-pkg: use fakeroot if available scripts/package: add KBUILD_PKG_ROOTCMD variable scripts/package: tar-pkg: use tar --owner=root Kbuild: clean up marker net: add net_tstamp.h to headers_install kbuild: move utsrelease.h to include/generated kbuild: move autoconf.h to include/generated drop explicit include of autoconf.h kbuild: move compile.h to include/generated kbuild: drop include/asm kbuild: do not check for include/asm-$ARCH ... Fixed non-conflicting clean merge of modpost.c as per comments from Stephen Rothwell (modpost.c had grown an include of linux/autoconf.h that needed to be changed to generated/autoconf.h)
2009-12-16Merge branch 'next' of git://git.secretlab.ca/git/linux-2.6Linus Torvalds
* 'next' of git://git.secretlab.ca/git/linux-2.6: (23 commits) powerpc: fix up for mmu_mapin_ram api change powerpc: wii: allow ioremap within the memory hole powerpc: allow ioremap within reserved memory regions wii: use both mem1 and mem2 as ram wii: bootwrapper: add fixup to calc useable mem2 powerpc: gamecube/wii: early debugging using usbgecko powerpc: reserve fixmap entries for early debug powerpc: wii: default config powerpc: wii: platform support powerpc: wii: hollywood interrupt controller support powerpc: broadway processor support powerpc: wii: bootwrapper bits powerpc: wii: device tree powerpc: gamecube: default config powerpc: gamecube: platform support powerpc: gamecube/wii: flipper interrupt controller support powerpc: gamecube/wii: udbg support for usbgecko powerpc: gamecube/wii: do not include PCI support powerpc: gamecube/wii: declare as non-coherent platforms powerpc: gamecube/wii: introduce GAMECUBE_COMMON ... Fix up conflicts in arch/powerpc/mm/fsl_booke_mmu.c. Hopefully even close to correctly.
2009-12-14genirq: Convert irq_desc.lock to raw_spinlockThomas Gleixner
Convert locks which cannot be sleeping locks in preempt-rt to raw_spinlocks. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Peter Zijlstra <peterz@infradead.org> Acked-by: Ingo Molnar <mingo@elte.hu>
2009-12-14locking: Convert __raw_spin* functions to arch_spin*Thomas Gleixner
Name space cleanup. No functional change. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Peter Zijlstra <peterz@infradead.org> Acked-by: David S. Miller <davem@davemloft.net> Acked-by: Ingo Molnar <mingo@elte.hu> Cc: linux-arch@vger.kernel.org
2009-12-14locking: Convert raw_spinlock to arch_spinlockThomas Gleixner
The raw_spin* namespace was taken by lockdep for the architecture specific implementations. raw_spin_* would be the ideal name space for the spinlocks which are not converted to sleeping locks in preempt-rt. Linus suggested to convert the raw_ to arch_ locks and cleanup the name space instead of using an artifical name like core_spin, atomic_spin or whatever No functional change. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Peter Zijlstra <peterz@infradead.org> Acked-by: David S. Miller <davem@davemloft.net> Acked-by: Ingo Molnar <mingo@elte.hu> Cc: linux-arch@vger.kernel.org
2009-12-14Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu: (34 commits) m68k: rename global variable vmalloc_end to m68k_vmalloc_end percpu: add missing per_cpu_ptr_to_phys() definition for UP percpu: Fix kdump failure if booted with percpu_alloc=page percpu: make misc percpu symbols unique percpu: make percpu symbols in ia64 unique percpu: make percpu symbols in powerpc unique percpu: make percpu symbols in x86 unique percpu: make percpu symbols in xen unique percpu: make percpu symbols in cpufreq unique percpu: make percpu symbols in oprofile unique percpu: make percpu symbols in tracer unique percpu: make percpu symbols under kernel/ and mm/ unique percpu: remove some sparse warnings percpu: make alloc_percpu() handle array types vmalloc: fix use of non-existent percpu variable in put_cpu_var() this_cpu: Use this_cpu_xx in trace_functions_graph.c this_cpu: Use this_cpu_xx for ftrace this_cpu: Use this_cpu_xx in nmi handling this_cpu: Use this_cpu operations in RCU this_cpu: Use this_cpu ops for VM statistics ... Fix up trivial (famous last words) global per-cpu naming conflicts in arch/x86/kvm/svm.c mm/slab.c
2009-12-12powerpc: wii: allow ioremap within the memory holeAlbert Herranz
Enable the flag that allows a platform to ioremap memory marked as reserved. This is currently needed on the Nintendo Wii video game console due to the workaround introduced in "wii: use both mem1 and mem2 as ram". This will no longer be needed when proper discontig memory support for 32-bit PowerPC is added to the kernel. Signed-off-by: Albert Herranz <albert_herranz@yahoo.es> Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2009-12-12wii: use both mem1 and mem2 as ramAlbert Herranz
The Nintendo Wii video game console has two discontiguous RAM regions: - MEM1: 24MB @ 0x00000000 - MEM2: 64MB @ 0x10000000 Unfortunately, the kernel currently does not support discontiguous RAM memory regions on 32-bit PowerPC platforms. This patch adds a series of workarounds to allow the use of the second memory region (MEM2) as RAM by the kernel. Basically, a single range of memory from the beginning of MEM1 to the end of MEM2 is reported to the kernel, and a memory reservation is created for the hole between MEM1 and MEM2. With this patch the system is able to use all the available RAM and not just ~27% of it. This will no longer be needed when proper discontig memory support for 32-bit PowerPC is added to the kernel. Signed-off-by: Albert Herranz <albert_herranz@yahoo.es> Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2009-12-12powerpc: gamecube/wii: early debugging using usbgeckoAlbert Herranz
Add support for using the USB Gecko adapter as an early debugging console on the Nintendo GameCube and Wii video game consoles. The USB Gecko is a 3rd party memory card interface adapter that provides a EXI (External Interface) to USB serial converter. Signed-off-by: Albert Herranz <albert_herranz@yahoo.es> Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2009-12-12powerpc: wii: platform supportAlbert Herranz
Add platform support for the Nintendo Wii video game console. Signed-off-by: Albert Herranz <albert_herranz@yahoo.es> Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Acked-by: Segher Boessenkool <segher@kernel.crashing.org> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2009-12-12powerpc: wii: hollywood interrupt controller supportAlbert Herranz
Add support for the dual interrupt controller included in the "Hollywood" chipset of the Nintendo Wii video game console. This interrupt controller serves both the Broadway processor (as a cascade) and the Starlet processor, and is used to manage interrupts for the non-classic hardware. Signed-off-by: Albert Herranz <albert_herranz@yahoo.es> Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Acked-by: Segher Boessenkool <segher@kernel.crashing.org> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2009-12-12powerpc: gamecube: platform supportAlbert Herranz
Add platform support for the Nintendo GameCube video game console. Signed-off-by: Albert Herranz <albert_herranz@yahoo.es> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2009-12-12powerpc: gamecube/wii: flipper interrupt controller supportAlbert Herranz
Add support for the interrupt controller included in the "Flipper" chipset of the Nintendo GameCube video game console. The same interrupt controller is also present in the "Hollywood" chipset of the Nintendo Wii. Signed-off-by: Albert Herranz <albert_herranz@yahoo.es> Acked-by: Segher Boessenkool <segher@kernel.crashing.org> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2009-12-12powerpc: gamecube/wii: udbg support for usbgeckoAlbert Herranz
Add support for using the USB Gecko adapter via the udbg facility on the Nintendo GameCube and Wii video game consoles. The USB Gecko is a 3rd party memory card interface adapter that provides a EXI (External Interface) to USB serial converter. Signed-off-by: Albert Herranz <albert_herranz@yahoo.es> Acked-by: Segher Boessenkool <segher@kernel.crashing.org> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2009-12-12powerpc: gamecube/wii: declare as non-coherent platformsAlbert Herranz
The processors bundled in the Nintendo GameCube and Wii video game consoles require explicit cache handling when DMA engines are used. Signed-off-by: Albert Herranz <albert_herranz@yahoo.es> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2009-12-12powerpc: gamecube/wii: introduce GAMECUBE_COMMONAlbert Herranz
Add a config option GAMECUBE_COMMON to be used as a dependency for all options common to the Nintendo GameCube and Wii video game consoles. Signed-off-by: Albert Herranz <albert_herranz@yahoo.es> Acked-by: Grant Likely <grant.likely@secretlab.ca> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>