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* [PATCH] slab: remove kmem_cache_tChristoph Lameter2006-12-071-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Replace all uses of kmem_cache_t with struct kmem_cache. The patch was generated using the following script: #!/bin/sh # # Replace one string by another in all the kernel sources. # set -e for file in `find * -name "*.c" -o -name "*.h"|xargs grep -l $1`; do quilt add $file sed -e "1,\$s/$1/$2/g" $file >/tmp/$$ mv /tmp/$$ $file quilt refresh done The script was run like this sh replace kmem_cache_t "struct kmem_cache" Signed-off-by: Christoph Lameter <clameter@sgi.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] slab: remove SLAB_KERNELChristoph Lameter2006-12-071-1/+1
| | | | | | | | SLAB_KERNEL is an alias of GFP_KERNEL. Signed-off-by: Christoph Lameter <clameter@sgi.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [POWERPC] Add missing EXPORTS for mpc52xx supportGrant Likely2006-12-051-0/+1
| | | | | Signed-off-by: Grant Likely <grant.likely@secretlab.ca> Signed-off-by: Paul Mackerras <paulus@samba.org>
* [POWERPC] Fix debug printks for 32-bit resources in the PCI codeSergei Shtylyov2006-12-041-13/+11
| | | | | | | | | Cure the damage done by the former PCI debug printks fix for the case of 64-bit resources (commit 685143ac1f7a579a3fac9c7f2ac8f82e95af6864) which broke it for the plain vanilla 32-bit resources... Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
* [POWERPC] Replace kmalloc+memset with kzallocYan Burman2006-12-044-9/+4
| | | | | | | Replace kmalloc+memset with kzalloc. Signed-off-by: Yan Burman <burman.yan@gmail.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
* [POWERPC] Add the e300c3 core to the CPU table.Scott Wood2006-12-041-0/+11
| | | | | | | This core is used in Freescale's 831x chips. Signed-off-by: Scott Wood <scottwood@freescale.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
* [POWERPC] iSeries: don't build head_64.o unnecessarilyStephen Rothwell2006-12-041-1/+1
| | | | | Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
* [POWERPC] Tell firmware we can handle POWER6 compatible modePaul Mackerras2006-12-041-0/+1
| | | | | | | | This adds the "logical" PVR value used by POWER6 in "compatible" mode to the list of PVR values that the kernel tells firmware it is able to handle. Signed-off-by: Paul Mackerras <paulus@samba.org>
* [POWERPC] Fix OF pci flags parsingOlof Johansson2006-12-041-0/+2
| | | | | | | | | For PCI devices with only io ports, of_bus_pci_get_flags() will fall through and still mark the resource as IORESOURCE_MEM. Signed-off-by: Olof Johansson <olof@lixom.net> Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
* [POWERPC] iSeries: Eliminate "exceeds stub group size" warningsStephen Rothwell2006-12-042-7/+7
| | | | | | | | Commit 3ccfc65c5004e5fe5cfbffe43b8acc686680b53e missed the same fixes for legacy iSeries specific code, so make some more symbols no longer global. Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
* [POWERPC] fix missing #include in sys_ppc32.cArnd Bergmann2006-12-041-0/+1
| | | | | | sys_mmap is declared in asm/syscalls.h Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>
* [POWERPC] powerpc: Make 970MP detectable by oprofileMike Wolf2006-12-041-1/+1
| | | | | | | | | Change the oprofile_cpu_type in cputables.c to be ppc64/970MP. Oprofile needs to distinquish the MP from other 970 processors so it can add some new counters specific to the 970MP. Signed-off-by: Mike Wolf <mjw@us.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
* [POWERPC] powerpc: Workaround for of_platform without "reg" nor "dcr-reg"Benjamin Herrenschmidt2006-12-041-2/+9
| | | | | | | | | | | | | | Devices with no "reg" nor "dcr-reg" property are given a bus_id which is the node name alone. This means that if more than one such device with the same names are present in the system, sysfs will have collisions when creating the symlinks and will fail registering the devices. This works around that problem by assigning successive numbers to such devices. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
* [POWERPC] Distinguish POWER6 partition modes and tell userspacePaul Mackerras2006-12-045-43/+117
| | | | | | | | | | | | | | | | | This adds code to look at the properties firmware puts in the device tree to determine what compatibility mode the partition is in on POWER6 machines, and set the ELF aux vector AT_HWCAP and AT_PLATFORM entries appropriately. Specifically, we look at the cpu-version property in the cpu node(s). If that contains a "logical" PVR value (of the form 0x0f00000x), we call identify_cpu again with this PVR value. A value of 0x0f000001 indicates the partition is in POWER5+ compatibility mode, and a value of 0x0f000002 indicates "POWER6 architected" mode, with various extensions disabled. We also look for various other properties: ibm,dfp, ibm,purr and ibm,spurr. Signed-off-by: Paul Mackerras <paulus@samba.org>
* [POWERPC] cell: Add oprofile supportMaynard Johnson2006-12-041-0/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add PPU event-based and cycle-based profiling support to Oprofile for Cell. Oprofile is expected to collect data on all CPUs simultaneously. However, there is one set of performance counters per node. There are two hardware threads or virtual CPUs on each node. Hence, OProfile must multiplex in time the performance counter collection on the two virtual CPUs. The multiplexing of the performance counters is done by a virtual counter routine. Initially, the counters are configured to collect data on the even CPUs in the system, one CPU per node. In order to capture the PC for the virtual CPU when the performance counter interrupt occurs (the specified number of events between samples has occurred), the even processors are configured to handle the performance counter interrupts for their node. The virtual counter routine is called via a kernel timer after the virtual sample time. The routine stops the counters, saves the current counts, loads the last counts for the other virtual CPU on the node, sets interrupts to be handled by the other virtual CPU and restarts the counters, the virtual timer routine is scheduled to run again. The virtual sample time is kept relatively small to make sure sampling occurs on both CPUs on the node with a relatively small granularity. Whenever the counters overflow, the performance counter interrupt is called to collect the PC for the CPU where data is being collected. The oprofile driver relies on a firmware RTAS call to setup the debug bus to route the desired signals to the performance counter hardware to be counted. The RTAS call must set the routing registers appropriately in each of the islands to pass the signals down the debug bus as well as routing the signals from a particular island onto the bus. There is a second firmware RTAS call to reset the debug bus to the non pass thru state when the counters are not in use. Signed-off-by: Carl Love <carll@us.ibm.com> Signed-off-by: Maynard Johnson <mpjohn@us.ibm.com> Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
* [POWERPC] Fix wraparound problem in smp-tbsync on 32-bitAdrian Cox2006-12-041-1/+1
| | | | | | | | | | The patch below fixes an arithmetic wrap-around issue on 32bit machines using smp-tbsync. Without this patch a timebase value over 0x000000007fffffff will hang the boot process while bringing up secondary CPUs. Signed-off-by: Adrian Cox <adrian@humboldt.co.uk> Signed-off-by: Paul Mackerras <paulus@samba.org>
* [POWERPC] Wrap cpu_die() with CONFIG_HOTPLUG_CPULinas Vepstas2006-12-041-2/+3
| | | | | | | | | | Per email discussion, it appears that rtas_stop_self() and pSeries_mach_cpu_die() should not be compiled if CONFIG_HOTPLUG_CPU is not defined. This patch adds #ifdefs around these bits of code. Signed-off-by: Linas Vepstas <linas@austin.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
* [POWERPC] Make soft_enabled irqs preempt safeHugh Dickins2006-12-041-5/+52
| | | | | | | | | Rewrite local_get_flags and local_irq_disable to use r13 explicitly, to avoid the risk that gcc will split get_paca()->soft_enabled into a sequence unsafe against preemption. Similar care in local_irq_restore. Signed-off-by: Hugh Dickins <hugh@veritas.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
* [POWERPC] iSeries: fix time.c for combined buildStephen Rothwell2006-12-041-3/+4
| | | | | Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
* [POWERPC] iSeries: fix sysfs.c for combined buildStephen Rothwell2006-12-041-6/+4
| | | | | Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
* [POWERPC] iSeries: fix irq.c for combined buildStephen Rothwell2006-12-041-1/+2
| | | | | Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
* [POWERPC] Merge 32 and 64 bits asm-powerpc/io.hBenjamin Herrenschmidt2006-12-046-39/+95
| | | | | | | | | | | | | powerpc: Merge 32 and 64 bits asm-powerpc/io.h The rework on io.h done for the new hookable accessors made it easier, so I just finished the work and merged 32 and 64 bits io.h for arch/powerpc. arch/ppc still uses the old version in asm-ppc, there is just too much gunk in there that I really can't be bothered trying to cleanup. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
* [POWERPC] Cell iommu supportJeremy Kerr2006-12-041-7/+7
| | | | | | | | | | | | | | This patch adds full cell iommu support (and iommu disabled mode). It implements mapping/unmapping of iommu pages on demand using the standard powerpc iommu framework. It also supports running with iommu disabled for machines with less than 2GB of memory. (The default is off in that case, though it can be forced on with the kernel command line option iommu=force). Signed-off-by: Jeremy Kerr <jk@ozlabs.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
* [POWERPC] Make direct DMA use node local allocationsBenjamin Herrenschmidt2006-12-041-5/+9
| | | | | | | | | This patch makes dma_alloc_coherent() use node local allocation when using the direct DMA ops. The node is obtained from the new device extension. If no such extension is present, the current node is used. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
* [POWERPC] Add an optional offset to direct DMA on 64 bitsBenjamin Herrenschmidt2006-12-041-3/+8
| | | | | | | | | | | | This patch adds an optional global offset that can be added to DMA addresses when using the direct DMA operations. That brings it a step closer to the 32 bits direct DMA operations, and makes it useable on Cell when the MMU is disabled and we are using a spider southbridge. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
* [POWERPC] Allow hooking of PCI MMIO & PIO accessors on 64 bitsBenjamin Herrenschmidt2006-12-044-17/+16
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch reworks the way iSeries hooks on PCI IO operations (both MMIO and PIO) and provides a generic way for other platforms to do so (we have need to do that for various other platforms). While reworking the IO ops, I ended up doing some spring cleaning in io.h and eeh.h which I might want to split into 2 or 3 patches (among others, eeh.h had a lot of useless stuff in it). A side effect is that EEH for PIO should work now (it used to pass IO ports down to the eeh address check functions which is bogus). Also, new are MMIO "repeat" ops, which other archs like ARM already had, and that we have too now: readsb, readsw, readsl, writesb, writesw, writesl. In the long run, I might also make EEH use the hooks instead of wrapping at the toplevel, which would make things even cleaner and relegate EEH completely in platforms/iseries, but we have to measure the performance impact there (though it's really only on MMIO reads) Since I also need to hook on ioremap, I shuffled the functions a bit there. I introduced ioremap_flags() to use by drivers who want to pass explicit flags to ioremap (and it can be hooked). The old __ioremap() is still there as a low level and cannot be hooked, thus drivers who use it should migrate unless they know they want the low level version. The patch "arch provides generic iomap missing accessors" (should be number 4 in this series) is a pre-requisite to provide full iomap API support with this patch. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
* [POWERPC] Generic OF platform driver for PCI host bridges.Benjamin Herrenschmidt2006-12-043-3/+116
| | | | | | | | | | | | | | | | | When enabled in Kconfig, it will pick up any of_platform_device matching it's match list (currently type "pci", "pcix", "pcie", or "ht" and setup a PHB for it. Platform must provide a ppc_md.pci_setup_phb() for it to work (for doing the necessary initialisations specific to a given PHB like setting up the config space ops). It's currently only available on 64 bits as the 32 bits PCI code can't quite cope with it in it's current form. I will fix that later. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
* [POWERPC] Add "parent" struct device for PCI host bridgesBenjamin Herrenschmidt2006-12-042-2/+5
| | | | | | | | | | | Add a "parent" struct device to our PCI host bridge data structure so that PCI can be rooted off another device in sysfs. Note that arch/ppc doesn't use it, only arch/powerpc, though it's available for both 32 and 64 bits. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
* [POWERPC] Resolve the BUID for RTAS PCI config space accessesBenjamin Herrenschmidt2006-12-041-23/+4
| | | | | | | | | | | The BUID is the first entry of a PCI host bridge "reg" property. Now that PCI busses can be anywhere in the device-tree, we need to fully translate the value there to a CPU physical address before we can use it with RTAS. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
* [POWERPC] Resolve the parent address of a PCI bus rangeBenjamin Herrenschmidt2006-12-041-5/+1
| | | | | | | | | | | | | When parsing the OF "ranges" properties of PCI host busses to determine the mapping of a PCI bus, we need to translate the "parent" address using the prom_parse.c routines in order to obtain a CPU physical address. This wasn't necessary while PCI busses were always at the root of the device-tree but this is no longer the case on Cell where they can be anywhere in the tree. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
* [POWERPC] Refactor 64 bits DMA operationsBenjamin Herrenschmidt2006-12-0410-448/+199
| | | | | | | | | | | | | | | | | This patch completely refactors DMA operations for 64 bits powerpc. 32 bits is untouched for now. We use the new dev_archdata structure to add the dma operations pointer and associated data to struct device. While at it, we also add the OF node pointer and numa node. In the future, we might want to look into merging that with pci_dn as well. The old vio, pci-iommu and pci-direct DMA ops are gone. They are now replaced by a set of generic iommu and direct DMA ops (non PCI specific) that can be used by bus types. The toplevel implementation is now inline. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
* [POWERPC] Souped-up of_platform_device supportBenjamin Herrenschmidt2006-12-043-146/+400
| | | | | | | | | | | | | | | | | | | | | | | | This patch first splits of_device.c and of_platform.c, the later containing the bits relative to of_platform_device's. On the "breaks" side of things, drivers uisng of_platform_device(s) need to include asm/of_platform.h now and of_(un)register_driver is now of_(un)register_platform_driver. In addition to a few utility functions to locate of_platform_device(s), the main new addition is of_platform_bus_probe() which allows the platform code to trigger an automatic creation of of_platform_devices for a whole tree of devices. The function acts based on the type of the various "parent" devices encountered from a provided root, using either a default known list of bus types that can be "probed" or a passed-in list. It will only register devices on busses matching that list, which mean that typically, it will not register PCI devices, as expected (since they will be picked up by the PCI layer). This will be used by Cell platforms using 4xx-type IOs in the Axon bridge and can be used by any embedded-type device as well. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
* [POWERPC] Generic DCR infrastructureBenjamin Herrenschmidt2006-12-041-0/+1
| | | | | | | | | | | This patch adds new dcr_map/dcr_read/dcr_write accessors for DCRs that can be used by drivers to transparently address either native DCRs or memory mapped DCRs. The implementation for memory mapped DCRs is done after the binding being currently worked on for SLOF and the Axon chipset. This patch enables it for the cell native platform Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
* [POWERPC] Remove ppc_md.pci_map_irq & ppc_swizzle for ARCH=powerpcBenjamin Herrenschmidt2006-12-041-23/+0
| | | | | | | | | | | | | | These were inherited from ARCH=ppc, but are not needed since parsing of interrupts should be done via the of_* functions (who can do swizzling). If we ever need to do non-standard swizzling on bridges without a device-node, then we might add back a slightly different version of ppc_md.pci_swizzle but for now, that is not the case. I removed the couple of calls for these in 83xx. If that breaks something, then there is a problem with the device-tree on these. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
* [POWERPC] Make pci_read_irq_line the defaultBenjamin Herrenschmidt2006-12-042-2/+16
| | | | | | | | | | | | | | | | | | | | | | | | | This patch reworks the way IRQs are fixed up on PCI for arch powerpc. It makes pci_read_irq_line() called by default in the PCI code for devices that are probed, and add an optional per-device fixup in ppc_md for platforms that really need to correct what they obtain from pci_read_irq_line(). It also removes ppc_md.irq_bus_setup which was only used by pSeries and should not be needed anymore. I've also removed the pSeries s7a workaround as it can't work with the current interrupt code anyway. I'm trying to get one of these machines working so I can test a proper fix for that problem. I also haven't updated the old-style fixup code from 85xx_cds.c because it's actually buggy :) It assigns pci_dev->irq hard coded numbers which is no good with the new IRQ mapping code. It should at least use irq_create_mapping(NULL, hard_coded_number); and possibly also set_irq_type() to set them as level low. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
* Merge branch 'linux-2.6' into for-linusPaul Mackerras2006-12-0423-628/+375
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| * [POWERPC] Revert "[POWERPC] Add powerpc get/set_rtc_time interface to new ↵Kim Phillips2006-11-221-42/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | generic rtc class" This reverts commit 7a69af63e788a324d162201a0b23df41bcf158dd. As advised by David Brownell: http://marc.theaimsgroup.com/?l=linux-kernel&m=116387226902131&w=2 Signed-off-by: Kim Phillips <kim.phillips@freescale.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
| * [POWERPC] pseries: Force 4k update_flash block and list sizesJohn Rose2006-11-101-10/+37
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The enablement of 64k pages on pseries platforms exposed a bug in the RTAS mechanism for updating firmware. RTAS assumes 4k for flash block and list sizes, and use of any other sizes results in a failure, even though PAPR does not specify any such requirement. This patch changes the rtas_flash module to force the use of 4k memory block and list sizes when preparing and sending a firmware image to RTAS. The rtas_flash function now uses a slab cache of 4k blocks with 4k alignment, rather than get_zeroed_page(), to allocate the memory for the flash blocks and lists. The 4k alignment requirement is specified in PAPR. Signed-off-by: John Rose <johnrose@austin.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
| * [PATCH] powerpc: Eliminate "exceeds stub group size" linker warningPaul Mackerras2006-11-011-12/+15
| | | | | | | | | | | | | | | | | | | | | | | | | | It turns out that the linker warnings on 64-bit powerpc about "section blah exceeds stub group size" were being triggered by conditional branches in head_64.S branching to global symbols, whether in head_64.S or in other files. This eliminates the warnings by making some global symbols in head_64.S no longer global, and by rearranging some branches. Signed-off-by: Paul Mackerras <paulus@samba.org> [ Yee-haa. Maybe I'll notice newly introduced real warnings now - Linus ] Signed-off-by: Linus Torvalds <torvalds@osdl.org>
| * [POWERPC] Make alignment exception always check exception tableBenjamin Herrenschmidt2006-11-011-8/+10
| | | | | | | | | | | | | | | | | | | | | | | | The alignment exception used to only check the exception table for -EFAULT, not for other errors. That opens an oops window if we can coerce the kernel into getting an alignment exception for other reasons in what would normally be a user-protected accessor, which can be done via some of the futex ops. This fixes it by always checking the exception tables. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
| * [POWERPC] Use 4kB iommu pages even on 64kB-page systemsLinas Vepstas2006-11-012-34/+47
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The 10Gigabit ethernet device drivers appear to be able to chew up all 256MB of TCE mappings on pSeries systems, as evidenced by numerous error messages: iommu_alloc failed, tbl c0000000010d5c48 vaddr c0000000d875eff0 npages 1 Some experimentation indicates that this is essentially because one 1500 byte ethernet MTU gets mapped as a 64K DMA region when the large 64K pages are enabled. Thus, it doesn't take much to exhaust all of the available DMA mappings for a high-speed card. This patch changes the iommu allocator to work with its own unique, distinct page size. Although the patch is long, its actually quite simple: it just #defines a distinct IOMMU_PAGE_SIZE and then uses this in all the places that matter. As a side effect, it also dramatically improves network performance on platforms with H-calls on iommu translation inserts/removes (since we no longer call it 16 times for a 1500 bytes packet when the iommu HW is still 4k). In the future, we might want to make the IOMMU_PAGE_SIZE a variable in the iommu_table instance, thus allowing support for different HW page sizes in the iommu itself. Signed-off-by: Linas Vepstas <linas@austin.ibm.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Acked-by: Olof Johansson <olof@lixom.net> Acked-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
| * [POWERPC] Fix oprofile support for e500 in arch/powerpcAndy Fleming2006-11-013-223/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Fixed a compile error in building the 85xx support with oprofile, and in the process cleaned up some issues with the fsl_booke performance monitor code. * Reorganized FSL Book-E performance monitoring code so that the 7450 wouldn't be built if the e500 was, and cleaned it up so it was more self-contained. * Added a cpu_setup function for FSL Book-E. The original cpu_setup function prototype had no arguments, assuming that the reg_setup function would copy the required information into variables which represented the registers. This was silly for e500, since it has 1 register per counter (rather than 3 for all counters), so the code has been restructured to have cpu_setup take the current counter config array as an argument, with op_powerpc_setup() invoking op_powerpc_cpu_setup() through on_each_cpu(), and op_powerpc_cpu_setup() invoking the model-specific cpu_setup function with an argument. The argument is ignored on all other platforms at present. * Fixed a confusing line where a trinary operator only had two arguments Signed-off-by: Andrew Fleming <afleming@freescale.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
| * [POWERPC] Fix various offb issuesBenjamin Herrenschmidt2006-11-011-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch fixes a few issues in offb: - A test was inverted causing the palette hack to never work (no device node was passed down to the init function) - Some cards seem to have their assigned-addresses property in a random order, thus we need to try using of_get_pci_address() first, which will fail if it's not a PCI device, and fallback to of_get_address() in that case. of_get_pci_address() properly parsees assigned-addresses to test the BAR number and thus will get it right whatever the order is. - Some cards (like GXT4500) provide a linebytes of 0xffffffff in the device-tree which does no good. This patch handles that by using the screen width when that happens. (Also fixes btext.c while at it). - Add detection of the GXT4500 in addition to the GXT2000 for the palette hacks (we use the same hack, palette is linear in register space at offset 0x6000). Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
| * [PATCH] vmlinux.lds: consolidate initcall sectionsAndrew Morton2006-10-271-7/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Add a vmlinux.lds.h helper macro for defining the eight-level initcall table, teach all the architectures to use it. This is a prerequisite for a patch which performs initcall synchronisation for multithreaded-probing. Cc: Greg KH <greg@kroah.com> Signed-off-by: Andrew Morton <akpm@osdl.org> [ Added AVR32 as well ] Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
| * [POWERPC] Make sure __cpu_preinit_ppc970 gets called on 970GX processorsOlof Johansson2006-10-261-0/+2
| | | | | | | | | | | | | | Add check for 970GX for __cpu_preinit_ppc970. Signed-off-by: Olof Johansson <olof@lixom.net> Signed-off-by: Paul Mackerras <paulus@samba.org>
| * [POWERPC] Fix device_is_compatible() const warningBenjamin Herrenschmidt2006-10-251-3/+5
| | | | | | | | | | | | | | | | | | Fix a const'ification related warning with device_is_compatible() and friends related to get_property() not properly having const on it's input device node argument. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
| * [POWERPC] Cell timebase bug workaroundBenjamin Herrenschmidt2006-10-251-2/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The Cell CPU timebase has an erratum. When reading the entire 64 bits of the timebase with one mftb instruction, there is a handful of cycles window during which one might read a value with the low order 32 bits already reset to 0x00000000 but the high order bits not yet incremeted by one. This fixes it by reading the timebase again until the low order 32 bits is no longer 0. That might introduce occasional latencies if hitting mftb just at the wrong time, but no more than 70ns on a cell blade, and that was considered acceptable. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Acked-by: Olof Johansson <olof@lixom.net> Signed-off-by: Paul Mackerras <paulus@samba.org>
| * [POWERPC] Support feature fixups in modulesBenjamin Herrenschmidt2006-10-252-19/+69
| | | | | | | | | | | | | | | | | | | | | | This patch adds support for feature fixups in modules. This involves adding support for R_PPC64_REL64 relocs to the 64 bits module loader. It also modifies modpost.c to ignore the powerpc fixup sections (or it would warn when used in .init.text). Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Acked-by: Olof Johansson <olof@lixom.net> Signed-off-by: Paul Mackerras <paulus@samba.org>
| * [POWERPC] Support feature fixups in vdso'sBenjamin Herrenschmidt2006-10-256-9/+73
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch reworks the feature fixup mecanism so vdso's can be fixed up. The main issue was that the construct: .long label (or .llong on 64 bits) will not work in the case of a shared library like the vdso. It will generate an empty placeholder in the fixup table along with a reloc, which is not something we can deal with in the vdso. The idea here (thanks Alan Modra !) is to instead use something like: 1: .long label - 1b That is, the feature fixup tables no longer contain addresses of bits of code to patch, but offsets of such code from the fixup table entry itself. That is properly resolved by ld when building the .so's. I've modified the fixup mecanism generically to use that method for the rest of the kernel as well. Another trick is that the 32 bits vDSO included in the 64 bits kernel need to have a table in the 64 bits format. However, gas does not support 32 bits code with a statement of the form: .llong label - 1b (Or even just .llong label) That is, it cannot emit the right fixup/relocation for the linker to use to assign a 32 bits address to an .llong field. Thus, in the specific case of the 32 bits vdso built as part of the 64 bits kernel, we are using a modified macro that generates: .long 0xffffffff .llong label - 1b Note that is assumes that the value is negative which is enforced by the .lds (those offsets are always negative as the .text is always before the fixup table and gas doesn't support emiting the reloc the other way around). Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
| * [POWERPC] Consolidate feature fixup codeBenjamin Herrenschmidt2006-10-256-220/+88
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | There are currently two versions of the functions for applying the feature fixups, one for CPU features and one for firmware features. In addition, they are both in assembly and with separate implementations for 32 and 64 bits. identify_cpu() is also implemented in assembly and separately for 32 and 64 bits. This patch replaces them with a pair of C functions. The call sites are slightly moved on ppc64 as well to be called from C instead of from assembly, though it's a very small change, and thus shouldn't cause any problem. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Acked-by: Olof Johansson <olof@lixom.net> Signed-off-by: Paul Mackerras <paulus@samba.org>