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2008-05-01ntp: rename TICK_LENGTH_SHIFT to NTP_SCALE_SHIFTRoman Zippel
As TICK_LENGTH_SHIFT is used for more than just the tick length, the name isn't quite approriate anymore, so this renames it to NTP_SCALE_SHIFT. Signed-off-by: Roman Zippel <zippel@linux-m68k.org> Cc: john stultz <johnstul@us.ibm.com> Cc: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-05-01ntp: increase time_freq resolutionRoman Zippel
This changes time_freq to a 64bit value and makes it static (the only outside user had no real need to modify it). Intermediate values were already 64bit, so the change isn't that big, but it saves a little in shifts by replacing SHIFT_NSEC with TICK_LENGTH_SHIFT. PPM_SCALE is then used to convert between user space and kernel space representation. Signed-off-by: Roman Zippel <zippel@linux-m68k.org> Cc: john stultz <johnstul@us.ibm.com> Cc: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-04-30Merge branch 'master' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc * 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc: [POWERPC] Fix crashkernel= handling when no crashkernel= specified [POWERPC] Make emergency stack safe for current_thread_info() use [POWERPC] spufs: add .gitignore for spu_save_dump.h & spu_restore_dump.h [POWERPC] spufs: trace spu_acquire_saved events [POWERPC] spufs: fix marker name for find_victim [POWERPC] spufs: add marker for destroy_spu_context [POWERPC] spufs: add sputrace marker parameter names [POWERPC] spufs: add context switch notification log [POWERPC] mpc5200: defconfigs for CM5200, Lite5200B, Motion-PRO and TQM5200 [POWERPC] mpc5200: Switch mpc5200 dts files to dts-v1 format [POWERPC] mpc5200: Fix FEC error handling on FIFO errors [POWERPC] mpc5200: add Phytec pcm030 board support [POWERPC] mpc5200: add gpiolib support for mpc5200 [POWERPC] mpc5200: add interrupt type function [POWERPC] mpc5200: Fix unterminated of_device_id table
2008-04-30Basic braille screen reader supportSamuel Thibault
This adds a minimalistic braille screen reader support. This is meant to be used by blind people e.g. on boot failures or when / cannot be mounted etc and thus the userland screen readers can not work. [akpm@linux-foundation.org: fix exports] Signed-off-by: Samuel Thibault <samuel.thibault@ens-lyon.org> Cc: Jiri Kosina <jikos@jikos.cz> Cc: Dmitry Torokhov <dtor@mail.ru> Acked-by: Alan Cox <alan@redhat.com> Cc: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-04-30[POWERPC] Fix crashkernel= handling when no crashkernel= specifiedMichael Ellerman
Commit edd8ce67436851a62f99f1d9707b40ea6a8e5323 (Use extended crashkernel command line on ppc64), changed the logic in reserve_crashkernel() which deals with the crashkernel= command line option. This introduced a bug in the case when there is no crashkernel= option, or it is incorrect. We would fall through and calculate the crash_size based on the existing values in crashk_res. If both start and end are 0, the default, we calculate the crash_size as 1 byte - which is wrong. Rework the logic so that we use crashk_res, regardless of whether it's set by the command line or via the device tree (see prom.c). Then check if we have an empty range (end == start), and if so make sure to set both end and start to zero (this is checked in machine_kexec_64.c). Then we calculate the crash_size once we know we have a non-zero range. Finally we always want to warn the user if they specify a base != 32MB, so remove the special case for that in the command line parsing case. Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-04-30[POWERPC] Make emergency stack safe for current_thread_info() useMichael Ellerman
The current_thread_info() macro, used by preempt_count(), assumes the base address and size of the stack are THREAD_SIZE aligned. The emergency stack currently isn't either of these things, which could potentially cause problems anytime we're running on the emergency stack. That includes when we detect a bad kernel stack pointer, and also during early_setup_secondary(). Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-04-30Merge git://git.kernel.org/pub/scm/linux/kernel/git/jk/spufsPaul Mackerras
2008-04-30[POWERPC] spufs: add .gitignore for spu_save_dump.h & spu_restore_dump.hKumar Gala
Signed-off-by: Kumar Gala <galak@kernel.crashing.org> Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
2008-04-30[POWERPC] spufs: trace spu_acquire_saved eventsJulio M. Merino Vidal
The sputrace module contained a trace entry for spu_acquire_saved, but this marker was not placed anywhere. Fix this by adding a marker to the routine. Signed-off-by: Julio M. Merino Vidal <jmerino@ac.upc.edu> Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
2008-04-30[POWERPC] spufs: fix marker name for find_victimJulio M. Merino Vidal
Fix a typo in the marker for the find_victim function, which prevented it from being traced. It previously read find_vitim. Signed-off-by: Julio M. Merino Vidal <jmerino@ac.upc.edu> Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
2008-04-30[POWERPC] spufs: add marker for destroy_spu_contextJulio M. Merino Vidal
The sputrace module contained a reference to a marker for destroy_spu_context, but this marker did not appear in the code. Fix this by adding a marker in the function. Signed-off-by: Julio M. Merino Vidal <jmerino@ac.upc.edu> Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
2008-04-30[POWERPC] spufs: add sputrace marker parameter namesJulio M. Merino Vidal
The markers facility defines the marker parameters to be of the form 'name %format'. Add parameter names to sputrace, to specify the context and %spu paramerters, instead of just specifying the '%format' part. Signed-off-by: Julio M. Merino Vidal <jmerino@ac.upc.edu> Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
2008-04-30[POWERPC] spufs: add context switch notification logChristoph Hellwig
There are userspace instrumentation tools that need to monitor spu context switches. This patch adds a new file called 'switch_log' to each spufs context directory that can be used to monitor the context switches. Context switch in/out and exit from spu_run are monitored after the file was first opened and can be read from it. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
2008-04-29i2c: Convert most new-style drivers to use module aliasingJean Delvare
Based on earlier work by Jon Smirl and Jochen Friedrich. Update most new-style i2c drivers to use standard module aliasing instead of the old driver_name/type driver matching scheme. I've left the video drivers apart (except for SoC camera drivers) as they're a bit more diffcult to deal with, they'll have their own patch later. Signed-off-by: Jean Delvare <khali@linux-fr.org> Cc: Jon Smirl <jonsmirl@gmail.com> Cc: Jochen Friedrich <jochen@scram.de>
2008-04-29Merge branch 'master' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc * 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc: [RAPIDIO] Change RapidIO doorbell source and target ID field to 16-bit [RAPIDIO] Add RapidIO connection info print out and re-training for broken connections [RAPIDIO] Add serial RapidIO controller support, which includes MPC8548, MPC8641 [RAPIDIO] Add RapidIO node probing into MPC86xx_HPCN board id table [RAPIDIO] Add RapidIO node into MPC8641HPCN dts file [RAPIDIO] Auto-probe the RapidIO system size [RAPIDIO] Add OF-tree support to RapidIO controller driver [RAPIDIO] Add RapidIO multi mport support [RAPIDIO] Move include/asm-ppc/rio.h to asm-powerpc [RAPIDIO] Add RapidIO option to kernel configuration [RAPIDIO] Change RIO function mpc85xx_ to fsl_ [POWERPC] Provide walk_memory_resource() for powerpc [POWERPC] Update lmb data structures for hotplug memory add/remove [POWERPC] Hotplug memory remove notifications for powerpc [POWERPC] windfarm: Add PowerMac 12,1 support [POWERPC] Fix building of pmac32 when CONFIG_NVRAM=m [POWERPC] Add IRQSTACKS support on ppc32 [POWERPC] Use __always_inline for xchg* and cmpxchg* [POWERPC] Add fast little-endian switch system call
2008-04-29ppc/powerpc: use kbuild.h instead of defining macros in asm-offsets.cChristoph Lameter
Signed-off-by: Christoph Lameter <clameter@sgi.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-04-29powerpc: use non-racy method for proc entries creationDenis V. Lunev
Use proc_create()/proc_create_data() to make sure that ->proc_fops and ->data be setup before gluing PDE to main tree. Add correct ->owner to proc_fops to fix reading/module unloading race. Signed-off-by: Denis V. Lunev <den@openvz.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Alexey Dobriyan <adobriyan@gmail.com> Cc: "Eric W. Biederman" <ebiederm@xmission.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-04-29[POWERPC] mpc5200: defconfigs for CM5200, Lite5200B, Motion-PRO and TQM5200Bartlomiej Sieka
Board-specific defconfigs based on current mpc5200_defconfig, archival lite5200_defconfig, and [cm5200|motionpro|tqm5200]_defconfig from the linux-2.6-denx tree. Kernels build using these defconfigs were verified to boot with root filesystem mounted over NFS on Motion-PRO, TQM5200 and Lite5200B boards. CM5200 target was not tested due to hardware unavailability. Signed-off-by: Bartlomiej Sieka <tur@semihalf.com> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2008-04-29[POWERPC] mpc5200: Switch mpc5200 dts files to dts-v1 formatGrant Likely
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2008-04-29[POWERPC] mpc5200: add Phytec pcm030 board supports.hauer@pengutronix.de
Add board support for the Phytec pcm030 mpc5200b based board. It does not need any platform specific fixups and as such is handled as a mpc5200 simple platform. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2008-04-29[POWERPC] mpc5200: add gpiolib support for mpc5200s.hauer@pengutronix.de
This patch adds gpiolib support for mpc5200 SOCs. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2008-04-29[POWERPC] mpc5200: add interrupt type functionSascha Hauer
Add a set_type function for external (GPIO) interrupts. Signed-off-by: Juergen Beisert <j.beisert@pengutronix.de> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2008-04-29[RAPIDIO] Change RapidIO doorbell source and target ID field to 16-bitZhang Wei
Change RapidIO doorbell source and target ID field to 16-bit for support large system size, which max rio devid is 65535. Signed-off-by: Zhang Wei <wei.zhang@freescale.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-04-29[RAPIDIO] Add RapidIO connection info print out and re-training for broken ↵Zhang Wei
connections Signed-off-by: Zhang Wei <wei.zhang@freescale.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-04-29[RAPIDIO] Add serial RapidIO controller support, which includes MPC8548, MPC8641Zhang Wei
Signed-off-by: Zhang Wei <wei.zhang@freescale.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-04-29[RAPIDIO] Add RapidIO node probing into MPC86xx_HPCN board id tableZhang Wei
Signed-off-by: Zhang Wei <wei.zhang@freescale.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-04-29[RAPIDIO] Add RapidIO node into MPC8641HPCN dts fileZhang Wei
This adds properties describing the RapidIO controller to the device-tree source for the MPC8641HPCN board. Signed-off-by: Zhang Wei <wei.zhang@freescale.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-04-29[RAPIDIO] Auto-probe the RapidIO system sizeZhang Wei
The RapidIO system size will auto probe in RIO setup. The route table and rionet_active in rionet.c are changed to be allocated dynamically according to the size of the system. Signed-off-by: Zhang Wei <wei.zhang@freescale.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-04-29[RAPIDIO] Add OF-tree support to RapidIO controller driverZhang Wei
This initializes the RapidIO controller driver using addresses and interrupt numbers obtained from the firmware device tree, rather than using hardcoded constants. Signed-off-by: Zhang Wei <wei.zhang@freescale.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-04-29[RAPIDIO] Add RapidIO multi mport supportZhang Wei
The original RapidIO driver suppose there is only one mpc85xx RIO controller in system. So, some data structures are defined as mpc85xx_rio global, such as 'regs_win', 'dbell_ring', 'msg_tx_ring'. Now, I changed them to mport's private members. And you can define multi RIO OF-nodes in dts file for multi RapidIO controller in one processor, such as PCI/PCI-Ex host controllers in Freescale's silicon. And the mport operation function declaration should be changed to know which RapidIO controller is target. Signed-off-by: Zhang Wei <wei.zhang@freescale.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-04-29[RAPIDIO] Add RapidIO option to kernel configurationZhang Wei
Signed-off-by: Zhang Wei <wei.zhang@freescale.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-04-29[RAPIDIO] Change RIO function mpc85xx_ to fsl_Zhang Wei
The driver is suitable for the Freescale MPC8641 processor as well as 85xx processors, so this changes the mpc85xx prefix to fsl. Signed-off-by: Zhang Wei <wei.zhang@freescale.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-04-29[POWERPC] Provide walk_memory_resource() for powerpcBadari Pulavarty
Provide walk_memory_resource() for 64-bit powerpc. PowerPC maintains logical memory region mapping in the lmb.memory structure. Walk through these structures and do the callbacks for the contiguous chunks. Signed-off-by: Badari Pulavarty <pbadari@us.ibm.com> Cc: Yasunori Goto <y-goto@jp.fujitsu.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>
2008-04-29[POWERPC] Update lmb data structures for hotplug memory add/removeBadari Pulavarty
The powerpc kernel maintains information about logical memory blocks in the lmb.memory structure, which is initialized and updated at boot time, but not when memory is added or removed while the kernel is running. This adds a hotplug memory notifier which updates lmb.memory when memory is added or removed. This information is useful for eHEA driver to find out the memory layout and holes. NOTE: No special locking is needed for lmb_add() and lmb_remove(). Calls to these are serialized by caller. (pSeries_reconfig_chain). Signed-off-by: Badari Pulavarty <pbadari@us.ibm.com> Cc: Yasunori Goto <y-goto@jp.fujitsu.com> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: "David S. Miller" <davem@davemloft.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-04-29[POWERPC] Hotplug memory remove notifications for powerpcBadari Pulavarty
Hotplug memory remove notifier for 64-bit powerpc. This gets invoked by writing to /proc/ppc64/ofdt the string "remove_node " followed by the firmware device tree pathname of the node that needs to be removed. In response, this adjusts the sections and removes sysfs entries by calling __remove_pages(). Then it calls arch-specific code to get rid of the hardware MMU mappings for the section of memory. Signed-off-by: Badari Pulavarty <pbadari@us.ibm.com> Reviewed-by: Michael Ellerman <michael@ellerman.id.au> Cc: Yasunori Goto <y-goto@jp.fujitsu.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>
2008-04-29[POWERPC] windfarm: Add PowerMac 12,1 supportÉtienne Bersac
This implements a new driver named windfarm_pm121, which drives the fans on PowerMac 12,1 machines : iMac G5 iSight (rev C) 17" and 20". It's based on the windfarm_pm81 driver from Benjamin Herrenschmidt. This includes fixes from David Woodhouse correcting the names of some of the sensors. Signed-off-by: Étienne Bersac <bersace@gmail.com> Signed-off-by: David Woodhouse <dwmw2@infradead.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-04-29[POWERPC] Fix building of pmac32 when CONFIG_NVRAM=mTony Breeds
Kamalesh Babulal (kamalesh@linux.vnet.ibm.com) reports that CONFIG_NVRAM=m is valid in terms of Kconfig but fails to build with: Building modules, stage 2. MODPOST 1401 modules ERROR: "pmac_newworld" [arch/powerpc/platforms/powermac/nvram.ko] undefined! ERROR: "__alloc_bootmem" [arch/powerpc/platforms/powermac/nvram.ko] undefined! make[1]: *** [__modpost] Error The arch/powerpc/platforms/powermac/nvram.c code really needs to be builtin, but as its compilation is dependent on a generic Kconfig symbol we force nvram.c to be builtin if CONFIG_NVRAM is 'y' or 'm'. Signed-off-by: Tony Breeds <tony@bakeyournoodle.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-04-29[POWERPC] Add IRQSTACKS support on ppc32Kumar Gala
This makes it possible to use separate stacks for hard and soft IRQs on 32-bit powerpc as well as on 64-bit. The code for 32-bit is just the 32-bit analog of the 64-bit code. * Added allocation and initialization of the irq stacks. We limit the stacks to be in lowmem for ppc32. * Implemented ppc32 versions of call_do_softirq() and call_handle_irq() to switch the stack pointers * Reworked how we do stack overflow detection. We now keep around the limit of the stack in the thread_struct and compare against the limit to see if we've overflowed. We can now use this on ppc64 if desired. [ paulus@samba.org: Fixed bug on 6xx where we need to reload r9 with the thread_info pointer. ] Signed-off-by: Kumar Gala <galak@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-04-29[POWERPC] Add fast little-endian switch system callPaul Mackerras
This adds a system call on 64-bit platforms for switching between little-endian and big-endian modes that is much faster than doing a prctl call. This system call is handled as a special case right at the start of the system call entry code, and because it is a special case, it uses a system call number which is out of the range of normal system calls, namely 0x1ebe. Measurements with lmbench on a 4.2GHz POWER6 showed no measurable change in the speed of normal system calls with this patch. Switching endianness with this new system call takes around 60ns on a 4.2GHz POWER6, compared with around 300ns to switch endian mode with a prctl. This can provide a significant performance advantage for emulators for little-endian architectures that want to switch between big-endian and little-endian mode frequently, e.g. because they are generating instructions sequences on the fly and they want to run those sequences in little-endian mode. The other thing about this system call is that it doesn't clobber as many registers as a normal system call. It only clobbers r12. Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-04-28celleb_scc_pciex __iomem annotationsAl Viro
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-04-28powerpc: Add DIU platform code for MPC8610HPCDYork Sun
Add platform code to support Freescale DIU. The platform code includes framebuffer memory allocation, pixel format, monitor port, etc. Signed-off-by: York Sun <yorksun@freescale.com> Signed-off-by: Timur Tabi <timur@freescale.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: "Antonino A. Daplas" <adaplas@pol.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-04-28fbdev: powerpc: driver for Freescale 8610 and 5121 DIUYork Sun
The following features are supported: plane 0 works as a regular frame buffer, can be accessed by /dev/fb0 plane 1 has two AOIs (area of interest), can be accessed by /dev/fb1 and /dev/fb2 plane 2 has two AOIs, can be accessed by /dev/fb3 and /dev/fb4 Special ioctls support AOIs All /dev/fb* can be used as regular frame buffer devices, except hardware change can only be made through /dev/fb0. Changing pixel clock has no effect on other fbs. Limitation of usage of AOIs: AOIs on the same plane can not be horizonally overlapped AOIs have horizonal order, i.e. AOI0 should be always on top of AOI1 AOIs can not beyond phisical display area. Application should check AOI geometry before changing physical resolution on /dev/fb0 required command line parameters to preallocate memory for frame buffer diufb. optional command line parameters to set modes and monitor video=fslfb:[resolution][,bpp][,monitor] Syntax: Resolution xres x yres-bpp@refresh_rate, the -bpp and @refresh_rate are optional eg, 1024x768, 1280x1024, 1280x1024-32, 1280x1024@60, 1280x1024-32@60, 1280x480-32@60 Bpp bpp=32, bpp=24, or bpp=16 Monitor monitor=0, monitor=1, monitor=2 0 is DVI 1 is Single link LVDS 2 is Double link LVDS Note: switching monitor is a board feather, not DIU feather. MPC8610HPCD has three monitor ports to swtich to. MPC5121ADS doesn't have additional monitor port. So switching monirot port for MPC5121ADS has no effect. If compiled as a module, it takes pamameters mode, bpp, monitor with the same syntax above. Signed-off-by: York Sun <yorksun@freescale.com> Signed-off-by: Timur Tabi <timur@freescale.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: "Antonino A. Daplas" <adaplas@pol.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-04-28return pfn from direct_access, for XIPJared Hulbert
Alter the block device ->direct_access() API to work with the new get_xip_mem() API (that requires both kaddr and pfn are returned). Some architectures will not do the right thing in their virt_to_page() for use by XIP (to translate from the kernel virtual address returned by direct_access(), to a user mappable pfn in XIP's page fault handler. However, we can't switch it to just return the pfn and not the kaddr, because we have no good way to get a kva from a pfn, and XIP requires the kva for its read(2) and write(2) handlers. So we have to return both. Signed-off-by: Jared Hulbert <jaredeh@gmail.com> Signed-off-by: Nick Piggin <npiggin@suse.de> Cc: Carsten Otte <cotte@de.ibm.com> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: linux-mm@kvack.org Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-04-28hotplug-memory: make online_page() commonJeremy Fitzhardinge
All architectures use an effectively identical definition of online_page(), so just make it common code. x86-64, ia64, powerpc and sh are actually identical; x86-32 is slightly different. x86-32's differences arise because it puts its hotplug pages in the highmem zone. We can handle this in the generic code by inspecting the page to see if its in highmem, and update the totalhigh_pages count appropriately. This leaves init_32.c:free_new_highpage with a single caller, so I folded it into add_one_highpage_init. I also removed an incorrect comment referring to the NUMA case; any NUMA details have already been dealt with by the time online_page() is called. [akpm@linux-foundation.org: fix indenting] Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> Acked-by: Dave Hansen <dave@linux.vnet.ibm.com> Reviewed-by: KAMEZAWA Hiroyuki <kamez.hiroyu@jp.fujitsu.com> Tested-by: KAMEZAWA Hiroyuki <kamez.hiroyu@jp.fujitsu.com> Cc: Yasunori Goto <y-goto@jp.fujitsu.com> Cc: Christoph Lameter <clameter@sgi.com> Acked-by: Ingo Molnar <mingo@elte.hu> Acked-by: Yasunori Goto <y-goto@jp.fujitsu.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-04-27KVM: ppc: PowerPC 440 KVM implementationHollis Blanchard
This functionality is definitely experimental, but is capable of running unmodified PowerPC 440 Linux kernels as guests on a PowerPC 440 host. (Only tested with 440EP "Bamboo" guests so far, but with appropriate userspace support other SoC/board combinations should work.) See Documentation/powerpc/kvm_440.txt for technical details. [stephen: build fix] Signed-off-by: Hollis Blanchard <hollisb@us.ibm.com> Acked-by: Paul Mackerras <paulus@samba.org> Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-04-25[POWERPC] Add zImage.iseries to arch/powerpc/boot/.gitignoreKumar Gala
Signed-off-by: Kumar Gala <galak@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-04-24[POWERPC] bootwrapper: fix build error on virtex405-head.SGrant Likely
virtex405-head.S is an assembler file, not a C file; therefore BOOTAFLAGS is the correct place to set the needed -mcpu=405 flag. Signed-off-by: Grant Likely <grant.likely@secretlab.ca> Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
2008-04-24[POWERPC] 4xx: Fix 460GT support to not enable FPUStefan Roese
The AMCC 460GT doesn't have an FPU so let's not enable support for it. Signed-off-by: Stefan Roese <sr@denx.de> Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
2008-04-24[POWERPC] 4xx: Add NOR FLASH entries to Canyonlands and Glacier dtsStefan Roese
This patch adds default NOR entries to the AMCC Canyonlands (460EX) and Glacier (460GT) dts files. Signed-off-by: Stefan Roese <sr@denx.de> Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
2008-04-24[POWERPC] Xilinx: boot support for Xilinx uart 16550.John Linn
The Xilinx 16550 uart core is not a standard 16550 because it uses word-based addressing rather than byte-based adressing. With additional properties it is compatible with the open firmware 'ns16550' compatible binding. This code updates the ns16550 driver to use the reg-offset property so that the Xilinx UART 16550 can be used with it. The reg-shift was already being handled. Signed-off-by: John Linn <john.linn@xilinx.com> Acked-by: Grant Likely <grant.likely@secretlab.ca> Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>