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2008-12-16powerpc: Fix !CONFIG_PPC_NEED_DMA_SYNC_OPS build warningBecky Bruce
Change #define stubs of dma_sync ops to be empty static inlines to avoid build warning. Signed-off-by: Becky Bruce <beckyb@kernel.crashing.org> Acked-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-12-16powerpc/ps3: Add sub-match id modalias supportGeert Uytterhoeven
commit 059e4938f8b060b10c4352e6c45739473bc73267 ("powerpc/ps3: Add a sub-match id to ps3_system_bus") forgot to update the module alias support: - Add the sub-match ids to the module aliases, so udev can distinguish between different types of sub-devices. - Rename PS3_MODULE_ALIAS_GRAPHICS to PS3_MODULE_ALIAS_GPU_FB, as ps3fb binds to the "FB" sub-device. Signed-off-by: Geert Uytterhoeven <Geert.Uytterhoeven@sonycom.com> Signed-off-by: Geoff Levand <geoffrey.levand@am.sony.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-12-16powerpc/ps3: Quiet dmesg outputGeoff Levand
Change the debug message in dma_sb_region_create() from pr_info() to DBG() to quiet the dmesg output. Signed-off-by: Geoff Levand <geoffrey.levand@am.sony.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-12-16powerpc: Fix typo in pgtable-ppc64.hGeoff Levand
Fix a minor comment typo in pgtable-ppc64.h. Signed-off-by: Geoff Levand <geoffrey.levand@am.sony.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-12-16powerpc/chrp: Add missing of_node_put in pci.cNicolas Palix
of_node_put is needed before discarding a value received from of_find_node_by_name, eg in error handling code or when the device node is no longer used. The semantic match that catches the bug is as follows: (http://www.emn.fr/x-info/coccinelle/) // <smpl> @r exists@ local idexpression struct device_node *n; position p1, p2; statement S1,S2; expression E,E1; expression *ptr != NULL; @@ ( if (!(n@p1 = of_find_node_by_name(...))) S1 | n@p1 = of_find_node_by_name(...) ) <... when != of_node_put(n) when != if (...) { <+... of_node_put(n) ...+> } when != true !n || ... when != n = E when != E = n if (!n || ...) S2 ...> ( return \(0\|<+...n...+>\|ptr\); | return@p2 ...; | n = E1 | E1 = n ) @script:python@ p1 << r.p1; p2 << r.p2; @@ print "* file: %s of_find_node_by_name %s return %s" % (p1[0].file,p1[0].line,p2[0].line) // </smpl> Signed-off-by: Nicolas Palix <npalix@diku.dk> Signed-off-by: Julia Lawall <julia@diku.dk> Acked-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-12-16Merge branch 'merge' into nextPaul Mackerras
2008-12-16powerpc/cell/axon-msi: Fix MSI after kexecArnd Bergmann
Commit d015fe995 'powerpc/cell/axon-msi: Retry on missing interrupt' has turned a rare failure to kexec on QS22 into a reproducible error, which we have now analysed. The problem is that after a kexec, the MSIC hardware still points into the middle of the old ring buffer. We set up the ring buffer during reboot, but not the offset into it. On older kernels, this would cause a storm of thousands of spurious interrupts after a kexec, which would most of the time get dropped silently. With the new code, we time out on each interrupt, waiting for it to become valid. If more interrupts come in that we time out on, this goes on indefinitely, which eventually leads to a hard crash. The solution in this commit is to read the current offset from the MSIC when reinitializing it. This now works correctly, as expected. Reported-by: Dirk Herrendoerfer <d.herrendoerfer@de.ibm.com> Signed-off-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Michael Ellerman <michael@ellerman.id.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-12-16powerpc: Fix bootmem reservation on uninitialized nodeDave Hansen
careful_allocation() was calling into the bootmem allocator for nodes which had not been fully initialized and caused a previous bug: http://patchwork.ozlabs.org/patch/10528/ So, I merged a few broken out loops in do_init_bootmem() to fix it. That changed the code ordering. I think this bug is triggered by having reserved areas for a node which are spanned by another node's contents. In the mark_reserved_regions_for_nid() code, we attempt to reserve the area for a node before we have allocated the NODE_DATA() for that nid. We do this since I reordered that loop. I suck. This is causing crashes at bootup on some systems, as reported by Jon Tollefson. This may only present on some systems that have 16GB pages reserved. But, it can probably happen on any system that is trying to reserve large swaths of memory that happen to span other nodes' contents. This commit ensures that we do not touch bootmem for any node which has not been initialized, and also removes a compile warning about an unused variable. Signed-off-by: Dave Hansen <dave@linux.vnet.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-12-16powerpc: Check for valid hugepage size in hugetlb_get_unmapped_areaBrian King
It looks like most of the hugetlb code is doing the correct thing if hugepages are not supported, but the mmap code is not. If we get into the mmap code when hugepages are not supported, such as in an LPAR which is running Active Memory Sharing, we can oops the kernel. This fixes the oops being seen in this path. oops: Kernel access of bad area, sig: 11 [#1] SMP NR_CPUS=1024 NUMA pSeries Modules linked in: nfs(N) lockd(N) nfs_acl(N) sunrpc(N) ipv6(N) fuse(N) loop(N) dm_mod(N) sg(N) ibmveth(N) sd_mod(N) crc_t10dif(N) ibmvscsic(N) scsi_transport_srp(N) scsi_tgt(N) scsi_mod(N) Supported: No NIP: c000000000038d60 LR: c00000000003945c CTR: c0000000000393f0 REGS: c000000077e7b830 TRAP: 0300 Tainted: G (2.6.27.5-bz50170-2-ppc64) MSR: 8000000000009032 <EE,ME,IR,DR> CR: 44000448 XER: 20000001 DAR: c000002000af90a8, DSISR: 0000000040000000 TASK = c00000007c1b8600[4019] 'hugemmap01' THREAD: c000000077e78000 CPU: 6 GPR00: 0000001fffffffe0 c000000077e7bab0 c0000000009a4e78 0000000000000000 GPR04: 0000000000010000 0000000000000001 00000000ffffffff 0000000000000001 GPR08: 0000000000000000 c000000000af90c8 0000000000000001 0000000000000000 GPR12: 000000000000003f c000000000a73880 0000000000000000 0000000000000000 GPR16: 0000000000000000 0000000000000000 0000000000000000 0000000000010000 GPR20: 0000000000000000 0000000000000003 0000000000010000 0000000000000001 GPR24: 0000000000000003 0000000000000000 0000000000000001 ffffffffffffffb5 GPR28: c000000077ca2e80 0000000000000000 c00000000092af78 0000000000010000 NIP [c000000000038d60] .slice_get_unmapped_area+0x6c/0x4e0 LR [c00000000003945c] .hugetlb_get_unmapped_area+0x6c/0x80 Call Trace: [c000000077e7bbc0] [c00000000003945c] .hugetlb_get_unmapped_area+0x6c/0x80 [c000000077e7bc30] [c000000000107e30] .get_unmapped_area+0x64/0xd8 [c000000077e7bcb0] [c00000000010b140] .do_mmap_pgoff+0x140/0x420 [c000000077e7bd80] [c00000000000bf5c] .sys_mmap+0xc4/0x140 [c000000077e7be30] [c0000000000086b4] syscall_exit+0x0/0x40 Instruction dump: fac1ffb0 fae1ffb8 fb01ffc0 fb21ffc8 fb41ffd0 fb61ffd8 fb81ffe0 fbc1fff0 fbe1fff8 f821fef1 f8c10158 f8e10160 <7d49002e> f9010168 e92d01b0 eb4902b0 Signed-off-by: Brian King <brking@linux.vnet.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-12-15powerpc/85xx: Fix compile issues with mpc8572ds.dtsKumar Gala
Fix the localbus reg & range properties to respect that the top level #address-cells and #size-cells = 2. The original commit (c64ef80b517680f1e228b2ee55e3ce7cd94c7fe0) did not do that. Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2008-12-15powerpc: Fix bogus cache flushing on all 40x and BookE processors v2Benjamin Herrenschmidt
We were missing the CPU_FTR_NOEXECUTE bit in our cputable for all these processors. The result is that update_mmu_cache() would flush the cache for all pages mapped to userspace which is totally unnecessary on those processors since we already handle flushing on execute in the page fault path. This should provide a nice speed up ;-) Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Acked-by: Josh Boyer <jwboyer@linux.vnet.ibm.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2008-12-14Merge branch 'merge' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/galak/powerpc * 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/galak/powerpc: powerpc/fsl-booke: Fix problem with _tlbil_va being interrupted
2008-12-13powerpc/fsl-booke: Fix problem with _tlbil_va being interruptedKumar Gala
An example calling sequence which we did see: copy_user_highpage -> kmap_atomic -> flush_tlb_page -> _tlbil_va We got interrupted after setting up the MAS registers before the tlbwe and the interrupt handler that caused the interrupt also did a kmap_atomic (ide code) and thus on returning from the interrupt the MAS registers no longer contained the proper values. Since we dont save/restore MAS registers for normal interrupts we need to disable interrupts in _tlbil_va to ensure atomicity. Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2008-12-13Merge ../linux-2.6-x86Rusty Russell
Conflicts: arch/x86/kernel/io_apic.c kernel/sched.c kernel/sched_stats.h
2008-12-13cpumask: convert struct clock_event_device to cpumask pointers.Rusty Russell
Impact: change calling convention of existing clock_event APIs struct clock_event_timer's cpumask field gets changed to take pointer, as does the ->broadcast function. Another single-patch change. For safety, we BUG_ON() in clockevents_register_device() if it's not set. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> Cc: Ingo Molnar <mingo@elte.hu>
2008-12-13cpumask: make irq_set_affinity() take a const struct cpumaskRusty Russell
Impact: change existing irq_chip API Not much point with gentle transition here: the struct irq_chip's setaffinity method signature needs to change. Fortunately, not widely used code, but hits a few architectures. Note: In irq_select_affinity() I save a temporary in by mangling irq_desc[irq].affinity directly. Ingo, does this break anything? (Folded in fix from KOSAKI Motohiro) Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> Signed-off-by: Mike Travis <travis@sgi.com> Reviewed-by: Grant Grundler <grundler@parisc-linux.org> Acked-by: Ingo Molnar <mingo@redhat.com> Cc: ralf@linux-mips.org Cc: grundler@parisc-linux.org Cc: jeremy@xensource.com Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
2008-12-13cpumask: change cpumask_scnprintf, cpumask_parse_user, cpulist_parse, and ↵Rusty Russell
cpulist_scnprintf to take pointers. Impact: change calling convention of existing cpumask APIs Most cpumask functions started with cpus_: these have been replaced by cpumask_ ones which take struct cpumask pointers as expected. These four functions don't have good replacement names; fortunately they're rarely used, so we just change them over. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> Signed-off-by: Mike Travis <travis@sgi.com> Acked-by: Ingo Molnar <mingo@elte.hu> Cc: paulus@samba.org Cc: mingo@redhat.com Cc: tony.luck@intel.com Cc: ralf@linux-mips.org Cc: Greg Kroah-Hartman <gregkh@suse.de> Cc: cl@linux-foundation.org Cc: srostedt@redhat.com
2008-12-13cpumask: centralize cpu_online_map and cpu_possible_mapRusty Russell
Impact: cleanup Each SMP arch defines these themselves. Move them to a central location. Twists: 1) Some archs (m32, parisc, s390) set possible_map to all 1, so we add a CONFIG_INIT_ALL_POSSIBLE for this rather than break them. 2) mips and sparc32 '#define cpu_possible_map phys_cpu_present_map'. Those archs simply have phys_cpu_present_map replaced everywhere. 3) Alpha defined cpu_possible_map to cpu_present_map; this is tricky so I just manipulate them both in sync. 4) IA64, cris and m32r have gratuitous 'extern cpumask_t cpu_possible_map' declarations. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> Reviewed-by: Grant Grundler <grundler@parisc-linux.org> Tested-by: Tony Luck <tony.luck@intel.com> Acked-by: Ingo Molnar <mingo@elte.hu> Cc: Mike Travis <travis@sgi.com> Cc: ink@jurassic.park.msu.ru Cc: rmk@arm.linux.org.uk Cc: starvik@axis.com Cc: tony.luck@intel.com Cc: takata@linux-m32r.org Cc: ralf@linux-mips.org Cc: grundler@parisc-linux.org Cc: paulus@samba.org Cc: schwidefsky@de.ibm.com Cc: lethal@linux-sh.org Cc: wli@holomorphy.com Cc: davem@davemloft.net Cc: jdike@addtoit.com Cc: mingo@redhat.com
2008-12-12Merge branch 'sched/core' into cpus4096Ingo Molnar
Conflicts: include/linux/ftrace.h kernel/sched.c
2008-12-12Merge branch 'tracing/fastboot' into cpus4096Ingo Molnar
2008-12-12Merge commit 'v2.6.28-rc8' into sched/coreIngo Molnar
2008-12-11powerpc/4xx: Add L2 cache node to AMCC Canyonlands dts fileStefan Roese
With this patch the L2 cache is enabled on Canyonlands to increase the overall performance. There is a known cache coherency issue with the L2 cache, but this is related to the high bandwidth (HB) PLB segment where the memory address is 0x8.xxxx.xxxx (low bandwidth PLB segment is mapped to 0x0.xxxx.xxxx). Since this HB address is currently unused it is safe to enable the L2 cache. Signed-off-by: Stefan Roese <sr@denx.de> Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
2008-12-11powerpc/40x: Add proper BOOTCFLAGS for cuboot-acadiaJosh Boyer
The cuboot-acadia.c wrapper can cause assembler errors on some toolchains due to the lack of the proper BOOTCFLAGS. This adds the proper flags for the file. Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
2008-12-09Merge branch 'merge' of ↵Paul Mackerras
master.kernel.org:/pub/scm/linux/kernel/git/galak/powerpc into merge
2008-12-08Merge branch 'sched/urgent' into sched/coreIngo Molnar
2008-12-05powerpc/virtex5: Fix Virtex5 machine check handlingGrant Likely
The 440x5 core in the Virtex5 uses the 440A type machine check (ie, they have MCSRR0/MCSRR1). They thus need to call the appropriate fixup function to hook the right variant of the exception. Without this, all machine checks become fatal due to loss of context when entering the exception handler. Signed-off-by: Grant Likely <grant.likely@secretlab.ca> Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
2008-12-05Merge branches 'tracing/ftrace', 'tracing/function-graph-tracer' and ↵Ingo Molnar
'tracing/urgent' into tracing/core
2008-12-04powerpc/83xx: Enable FIXED_PHY in mpc834x_itx and mpc83xx defconfigsAnton Vorontsov
This is needed so that Vitesse 7385 5-port switch could work on MPC8349E-mITX boards. Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com> Acked-by: Timur Tabi <timur@freescale.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2008-12-04powerpc/4xx: Add support for ISA holes on 4xx PCI/X/EBenjamin Herrenschmidt
This adds support for ISA memory holes on the PCI, PCI-X and PCI-E busses of the 4xx platforms. The patch includes changes to the Bamboo and Canyonlands device-trees to add such a hole, others can be updated separately. The ISA memory hole is an additional outbound window configured in the bridge to generate PCI cycles in the low memory addresses, thus allowing to access things such as the hard-decoded VGA aperture at 0xa0000..0xbffff or other similar things. It's made accessible to userspace via the new legacy_mem file in sysfs for which support was added by a previous patch. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
2008-12-04powerpc/44x: update ppc44x_defconfigStephen Rothwell
This removes CONFIG_PCI_LEGACY (which is not needed) and consequently several compiler warnings. Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
2008-12-04powerpc/kvm: update KVM config options in ppc44x_defconfigHollis Blanchard
KVM host support was recently enabled in ppc44x_defconfig, but since then the config option was renamed. Update ppc44x_defconfig to match. Also, KVM guests aren't very interesting without networking, so enable CONFIG_TUN and CONFIG_BRIDGE. Signed-off-by: Hollis Blanchard <hollisb@us.ibm.com> Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
2008-12-04Merge commit 'v2.6.28-rc7' into tracing/coreIngo Molnar
2008-12-04Merge branch 'master' into nextJames Morris
Conflicts: fs/nfsd/nfs4recover.c Manually fixed above to use new creds API functions, e.g. nfs4_save_creds(). Signed-off-by: James Morris <jmorris@namei.org>
2008-12-03powerpc/85xx: Create dts for each core in CAMP mode for MPC8572DSHaiying Wang
This patch creates the dts files for each core and splits the devices between the two cores for MPC8572DS. core0 has memory, L2, i2c, dma1, global-util, eth0, eth1, crypto, pci0, pci1. core1 has L2, dma2, eth2, eth3, pci2, msi. MPIC is shared between two cores but each core will protect its interrupts from other core by using "protected-sources" of mpic. Signed-off-by: Haiying Wang <Haiying.Wang@freescale.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2008-12-03powerpc/85xx: Don't reset the MPIC for CAMP mode on MPC8572DSHaiying Wang
The flag MPIC_WANTS_RESET shouldn't be set if we are doing cooperative asymmetric MP. The second linux shouldn't reset the pic or the first one gets very confused. Signed-off-by: Haiying Wang <Haiying.Wang@freescale.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2008-12-03powerpc/85xx: Add localbus node in mpc8572ds dts fileHaiying Wang
Also add NOR and NAND flash partitions for mpc8572ds board Signed-off-by: Haiying Wang <Haiying.Wang@freescale.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2008-12-03powerpc/86xx: Basic GPIO support for GE Fanuc SBC610Martyn Welch
Basic support for the GPIO available on the SBC610 VPX Single Board Computer from GE Fanuc (PowerPC MPC8641D). This patch adds basic support for the GPIO in the devices I/O FPGA, the GPIO functionality is exposed through the AFIX pins on the backplane, unless used by an AFIX card. This code currently does not support switching between totem-pole and open-drain outputs (when used as outputs, GPIOs default to totem-pole). The interrupt capabilites of the GPIO lines is also not currently supported. Signed-off-by: Martyn Welch <martyn.welch@gefanuc.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2008-12-03powerpc/qe: Move cmxgcr_lock definition from the ucc.c into the qe.cAnton Vorontsov
With this patch we can compile the qe_lib/usb.c without the UCC support (that is, without UCC_GETH and/or SERIAL_QE). Fixes following link error (CONFIG_SMP should be =y to trigger this): arch/powerpc/sysdev/built-in.o: In function `qe_usb_clock_set': (.text+0x3cae): undefined reference to `cmxgcr_lock' make: *** [.tmp_vmlinux1] Error 1 While at it, also add missing spinlock.h includes. Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com> Acked-By: Timur Tabi <timur@freescale.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2008-12-03powerpc/86xx: Add use of Epson RTX-8581 RTC to GE Fanuc SBC610 dtsMartyn Welch
Adding use of newly added Epson RTX-8581 real-time clock driver to GE Fanuc SBC610's dts file and adding driver to default config. Signed-off-by: Martyn Welch <martyn.welch@gefanuc.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2008-12-03powerpc/85xx: Fix compile warnings in mpc85xx_mds.cKumar Gala
arch/powerpc/platforms/85xx/mpc85xx_mds.c: In function 'board_fixups': arch/powerpc/platforms/85xx/mpc85xx_mds.c:244: warning: format '%x' expects type 'unsigned int', but argument 4 has type 'resource_size_t' arch/powerpc/platforms/85xx/mpc85xx_mds.c:250: warning: format '%x' expects type 'unsigned int', but argument 4 has type 'resource_size_t' Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2008-12-03powerpc/83xx: Fix MCU support merge issue in mpc8349emitx.dtsAnton Vorontsov
Just found the merge issue in 442746989d92afc125040e0f29b33602ad94da99 ("powerpc/83xx: Add support for MCU microcontroller in .dts files"): the commit adds the MCU controller node into the DMA node, which is wrong because the MCU sits on the I2C bus. Fix this by moving the MCU node into the I2C controller node. The original patch[1] was OK though. ;-) Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2008-12-03powerpc/85xx: Add support for SMP initializationKumar Gala
Added 85xx specifc smp_ops structure. We use ePAPR style boot release and the MPIC for IPIs at this point. Additionally added routines for secondary cpu entry and initializtion. Signed-off-by: Andy Fleming <afleming@freescale.com> Signed-off-by: Trent Piepho <tpiepho@freescale.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2008-12-03powerpc/85xx: minor head_fsl_booke.S cleanupKumar Gala
Removed unused branch labels Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2008-12-03powerpc: Better setup of boot page TLB entryTrent Piepho
The initial TLB mapping for the kernel boot didn't set the memory coherent attribute, MAS2[M], in SMP mode. If this code supported booting a secondary processor, which it doesn't yet, but if it did, then when a secondary processor boots, it would probably signal the primary processor by setting a variable called something like __secondary_hold_acknowledge. However, due to the lack of the M bit, the primary processor would not snoop the transaction (even if a transaction were broadcast). If primary CPU's L1 D-cache had a copy, it would not be flushed and the CPU would never see the ack. Which would have resulted in the primary CPU spinning for a long time, perhaps a full second before it gives up, while it would have waited for the ack from the secondary CPU that it wouldn't have been able to see because of the stale cache. The value of MAS2 for the boot page TLB1 entry is a compile time constant, so there is no need to calculate it in powerpc assembly language. Also, from the MPC8572 manual section 6.12.5.3, "Bits that represent offsets within a page are ignored and should be cleared." Existing code didn't clear them, this code does. The same when the page of KERNELBASE is found; we don't need to use asm to mask the lower 12 bits off. In the code that computes the address to rfi from, don't hard code the offset to 24 bytes, but have the assembler figure that out for us. Signed-off-by: Trent Piepho <tpiepho@freescale.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2008-12-03powerpc: Add SPE/EFP math emulation for E500v1/v2 processors.Liu Yu
This patch add the handlers of SPE/EFP exceptions. The code is used to emulate float point arithmetic, when MSR(SPE) is enabled and receive EFP data interrupt or EFP round interrupt. This patch has no conflict with or dependence on FP math-emu. The code has been tested by TestFloat. Now the code doesn't support SPE/EFP instructions emulation (it won't be called when receive program interrupt), but it could be easily added. Signed-off-by: Liu Yu <yu.liu@freescale.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2008-12-03powerpc/math-emu: Remove redundant 'ret'Liu Yu
FP_DECL_EX is already used, so ret is redundant. And FP_SET_EXCEPTION will add status into return value. Signed-off-by: Liu Yu <yu.liu@freescale.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2008-12-03powerpc/math-emu: Adopt new version of _FP_CHOOSENANLiu Yu
Move to using the same macro definition for _FP_CHOOSENAN as s390, sh, sparc32/64. The original author didn't understand this and matched what sparc64 was doing and they have updated to this definition. Signed-off-by: Liu Yu <yu.liu@freescale.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2008-12-03powerpc/math-emu: Fix single float point division bugLiu Yu
PowerPC float point division emulation is derived from gcc. I reported this problem on gcc maillist and got this reply: http://gcc.gnu.org/ml/gcc/2008-03/msg00543.html Since UDIV_NEEDS_NORMALIZATION is not used by kernel, we should use _FP_DIV_MEAT_1_udiv_norm to make sure the single float point is normalized before udiv_qrnnd. Signed-off-by: Liu Yu <yu.liu@freescale.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2008-12-03powerpc: Remove unncessary SPE related compiler flagKumar Gala
After testing of various compiler flag combinations by Nate Case it was determined that -mabi=no-spe has no impact on the compiler generating SPE instructions. Only -mno-spe and -mspe=no do. Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2008-12-03powerpc and sparc: Introduce dev_archdata node accessorsAnton Vorontsov
The name of the device_node field differ across the platforms, so we have to implement inlined accessors. This is needed to avoid ugly #ifdef in the generic code. Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com> Acked-by: David S. Miller <davem@davemloft.net> Acked-by: Grant Likely <grant.likely@secretlab.ca> Signed-off-by: Paul Mackerras <paulus@samba.org>
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