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* [PATCH] VFS: Permit filesystem to override root dentry on mountDavid Howells2006-06-23
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Extend the get_sb() filesystem operation to take an extra argument that permits the VFS to pass in the target vfsmount that defines the mountpoint. The filesystem is then required to manually set the superblock and root dentry pointers. For most filesystems, this should be done with simple_set_mnt() which will set the superblock pointer and then set the root dentry to the superblock's s_root (as per the old default behaviour). The get_sb() op now returns an integer as there's now no need to return the superblock pointer. This patch permits a superblock to be implicitly shared amongst several mount points, such as can be done with NFS to avoid potential inode aliasing. In such a case, simple_set_mnt() would not be called, and instead the mnt_root and mnt_sb would be set directly. The patch also makes the following changes: (*) the get_sb_*() convenience functions in the core kernel now take a vfsmount pointer argument and return an integer, so most filesystems have to change very little. (*) If one of the convenience function is not used, then get_sb() should normally call simple_set_mnt() to instantiate the vfsmount. This will always return 0, and so can be tail-called from get_sb(). (*) generic_shutdown_super() now calls shrink_dcache_sb() to clean up the dcache upon superblock destruction rather than shrink_dcache_anon(). This is required because the superblock may now have multiple trees that aren't actually bound to s_root, but that still need to be cleaned up. The currently called functions assume that the whole tree is rooted at s_root, and that anonymous dentries are not the roots of trees which results in dentries being left unculled. However, with the way NFS superblock sharing are currently set to be implemented, these assumptions are violated: the root of the filesystem is simply a dummy dentry and inode (the real inode for '/' may well be inaccessible), and all the vfsmounts are rooted on anonymous[*] dentries with child trees. [*] Anonymous until discovered from another tree. (*) The documentation has been adjusted, including the additional bit of changing ext2_* into foo_* in the documentation. [akpm@osdl.org: convert ipath_fs, do other stuff] Signed-off-by: David Howells <dhowells@redhat.com> Acked-by: Al Viro <viro@zeniv.linux.org.uk> Cc: Nathan Scott <nathans@sgi.com> Cc: Roland Dreier <rolandd@cisco.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* Merge branch 'devel' of master.kernel.org:/home/rmk/linux-2.6-armLinus Torvalds2006-06-23
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * 'devel' of master.kernel.org:/home/rmk/linux-2.6-arm: (21 commits) [ARM] 3629/1: S3C24XX: fix missing bracket in regs-dsc.h [ARM] 3537/1: Rework DMA-bounce locking for finer granularity [ARM] 3601/1: i.MX/MX1 DMA error handling for signaled channels only [ARM] 3597/1: ixp4xx/nslu2: Board support for new LED subsystem [ARM] 3595/1: ixp4xx/nas100d: Board support for new LED subsystem [ARM] 3626/1: ARM EABI: fix syscall restarting [ARM] 3628/1: S3C24XX: add get_rate call to struct clk [ARM] 3627/1: S3C24XX: split s3c2410 clocks from core clocks [ARM] 3613/1: S3C2410: Add sysdev and sysclass [ARM] 3624/1: Report true modem control line states [ARM] 3620/2: ixp23xx: add uengine loader support [ARM] 3618/1: add defconfig for logicpd pxa270 card engine [ARM] 3617/1: ep93xx: fix slightly incorrect timer tick rate [ARM] 3616/1: fix timer handler wrap logic for a number of platforms [ARM] 3615/1: ixp23xx: use platform devices for physmap flash [ARM] 3614/1: ep93xx: use platform devices for physmap flash [ARM] 3621/1: fix compilation breakage for pnx4008 [ARM] 3623/1: pnx4008: move GPIO-related defines to gpio.h [ARM] 3622/1: pnx4008: remove clk_use/clk_unuse [ARM] Enable VFP to be built when non-VFP capable CPUs are selected ...
| * [ARM] 3537/1: Rework DMA-bounce locking for finer granularityKevin Hilman2006-06-22
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Patch from Kevin Hilman This time with IRQ versions of locks. Rework also enables compatability with realtime-preemption patch. With the current locking via interrupt disabling, under RT, potentially sleeping functions can be called with interrupts disabled. Signed-off-by: Kevin Hilman <khilman@mvista.com> Signed-off-by: Deepak Saxena <dsaxena@plexity.net> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| * [ARM] 3601/1: i.MX/MX1 DMA error handling for signaled channels onlyPavel Pisa2006-06-22
| | | | | | | | | | | | | | | | | | | | | | | | Patch from Pavel Pisa There has been bug, that dma_err_handler() touches even channels not signaling error condition. Problem noticed by Andrea Paterniani. Signed-off-by: Pavel Pisa <pisa@cmp.felk.cvut.cz> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| * [ARM] 3597/1: ixp4xx/nslu2: Board support for new LED subsystemRod Whitby2006-06-22
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Patch from Rod Whitby This patch implements NEW_LEDS support for the Linksys NSLU2. The NSLU2 has four LED indicators, which are the only form of output for an unmodified device - there is no keyboard or display on an NSLU2. For an NSLU2 which has been modified to bring out the serial port console, it is important to register that device first separately, to enable debugging of other device support. Signed-off-by: John Bowler <jbowler@acm.org> Signed-off-by: Rod Whitby <rod@whitby.id.au> Signed-off-by: Deepak Saxena <dsaxena@plexity.net> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| * [ARM] 3595/1: ixp4xx/nas100d: Board support for new LED subsystemRod Whitby2006-06-22
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Patch from Rod Whitby This patch implements NEW_LEDS support for the IOMega NAS100d. The NAS100d has three LED indicators, which are the only form of output for an unmodified device - there is no keyboard or display on an NAS100d. For an NAS100d which has been modified to bring out the serial port console, it is important to register that device first separately, to enable debugging of other device support. Signed-off-by: John Bowler <jbowler@acm.org> Signed-off-by: Rod Whitby <rod@whitby.id.au> Signed-off-by: Deepak Saxena <dsaxena@plexity.net> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| * [ARM] 3626/1: ARM EABI: fix syscall restartingNicolas Pitre2006-06-22
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Patch from Nicolas Pitre The RESTARTBLOCK case currently store some code on the stack to invoke sys_restart_syscall. However this is ABI dependent and there is a mismatch with the way __NR_restart_syscall gets defined when the kernel is compiled for EABI. There is also a long standing bug in the thumb case since with OABI the __NR_restart_syscall value includes __NR_SYSCALL_BASE which should not be the case for Thumb syscalls. Credits to Yauheni Kaliuta <yauheni.kaliuta@gmail.com> for finding the EABI bug. Signed-off-by: Nicolas Pitre <nico@cam.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| * [ARM] 3628/1: S3C24XX: add get_rate call to struct clkBen Dooks2006-06-22
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Patch from Ben Dooks Add a get_rate call to allow an given clock to over-ride the clk_get_rate() call. This provides support for clocks which rely on division of their parent to correctly report their frequency when the parent can also change. Signed-off-by: Ben Dooks <ben-linux@fluff.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| * [ARM] 3627/1: S3C24XX: split s3c2410 clocks from core clocksBen Dooks2006-06-22
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Patch from Ben Dooks Split the s3c2410 specific clocks from the core clock code, as part of the work to support more of the Samsung line of SoCs. The patch does not use the sysdev mechanism as the clocks are needed for the timer init, which is very early in the kernel init sequence. Signed-off-by: Ben Dooks <ben-linux@fluff.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| * [ARM] 3613/1: S3C2410: Add sysdev and sysclassBen Dooks2006-06-22
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Patch from Ben Dooks The S3C2440 and S3C2442 both have their own sysdev and sysclass for differentiating them from the currently default S3C2410. Add a sysdev for the S3C2410 as part of the work to make the code be non-dependant on the S3C2410. Signed-off-by: Ben Dooks <ben-linux@fluff.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| * [ARM] 3620/2: ixp23xx: add uengine loader supportLennert Buytenhek2006-06-22
| | | | | | | | | | | | | | | | | | | | Patch from Lennert Buytenhek This patch allows the ixp2000 uengine loader that is already in the tree to also be used on the ixp23xx. Signed-off-by: Lennert Buytenhek <buytenh@wantstofly.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| * [ARM] 3618/1: add defconfig for logicpd pxa270 card engineLennert Buytenhek2006-06-22
| | | | | | | | | | | | | | | | | | | | | | Patch from Lennert Buytenhek As it's slightly nontrivial to make it possible to build a single kernel image for both the mainstone and the logicpd pxa270 card engine, add a separate defconfig for the logicpd pxa270 card engine for now. Signed-off-by: Lennert Buytenhek <buytenh@wantstofly.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| * [ARM] 3617/1: ep93xx: fix slightly incorrect timer tick rateLennert Buytenhek2006-06-22
| | | | | | | | | | | | | | | | | | | | | | Patch from Lennert Buytenhek The tick rate of timers 1-3 isn't exactly 508 kHz as some parts of the relevant documentation claim, but more like 508.469 kHz (14.7456 MHz divided by 29.) Signed-off-by: Lennert Buytenhek <buytenh@wantstofly.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| * [ARM] 3616/1: fix timer handler wrap logic for a number of platformsLennert Buytenhek2006-06-22
| | | | | | | | | | | | | | | | | | | | | | | | Patch from Lennert Buytenhek A couple of platforms aren't using the right comparison type in their timer interrupt handlers (as we're comparing two wrapping timestamps, we need a bmi/bpl-type comparison, not an unsigned comparison) -- this patch fixes them up. Signed-off-by: Lennert Buytenhek <buytenh@wantstofly.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| * [ARM] 3615/1: ixp23xx: use platform devices for physmap flashLennert Buytenhek2006-06-22
| | | | | | | | | | | | | | | | | | | | Patch from Lennert Buytenhek Now that the physmap platform device rewrite is in, make the ixp23xx boards use platform devices for physmap flash. Signed-off-by: Lennert Buytenhek <buytenh@wantstofly.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| * [ARM] 3614/1: ep93xx: use platform devices for physmap flashLennert Buytenhek2006-06-22
| | | | | | | | | | | | | | | | | | | | Patch from Lennert Buytenhek Now that the physmap platform device rewrite is in, make the ep93xx boards use platform devices for physmap flash. Signed-off-by: Lennert Buytenhek <buytenh@wantstofly.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| * [ARM] 3623/1: pnx4008: move GPIO-related defines to gpio.hVitaly Wool2006-06-22
| | | | | | | | | | | | | | | | | | | | Patch from Vitaly Wool This patch moves GPIO-related defines and static inline funcs from include/asm-arm/arch-pnx4008/pm.h to include/asm-arm/arch-pnx4008/gpio.h. Also, some more GPIO-related defines are added to include/asm-arm/arch-pnx4008/gpio.h as they are needed for the USB host driver (coming soon...) Signed-off-by: Vitaly Wool <vwool@ru.mvista.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| * [ARM] 3622/1: pnx4008: remove clk_use/clk_unuseVitaly Wool2006-06-22
| | | | | | | | | | | | | | | | | | | | Patch from Vitaly Wool clk_use/clk_unuse functions are no longer needed, so removing those from arch/arm/mach-pnx4008/clock.c. Also, the order of functions is rearranged a bit, to avoid forward declarations. Signed-off-by: Vitaly Wool <vwool@ru.mvista.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| * [ARM] Enable VFP to be built when non-VFP capable CPUs are selectedRussell King2006-06-22
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Since we pass flags to the compiler to control code generation based on the least capable selected CPU, if we want to include VFP support, we must tweak the assembler flags to allow the VFP instructions. Moreover, we must not use the mrrc/mcrr versions since these will not be recognised by the assembler. We do not convert all instructions to the VFP-equivalent (yet) since binutils appears to barf on "fmrx rn, fpinst" and doesn't provide any other way (other than using the mrc equivalent) to encode this instruction - which is rather a problem when you have a VFP implementation which requires these instructions. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| * [ARM] Add thread_notify infrastructureRussell King2006-06-22
| | | | | | | | | | | | | | | | | | | | | | | | | | Some machine classes need to allow VFP support to be built into the kernel, but still allow the kernel to run even though VFP isn't present. Unfortunately, the kernel hard-codes VFP instructions into the thread switch, which prevents this being run-time selectable. Solve this by introducing a notifier which things such as VFP can hook into to be informed of events which affect the VFP subsystem (eg, creation and destruction of threads, switches between threads.) Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* | Merge master.kernel.org:/pub/scm/linux/kernel/git/davej/cpufreqLinus Torvalds2006-06-23
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | * master.kernel.org:/pub/scm/linux/kernel/git/davej/cpufreq: [CPUFREQ] Fix ondemand vs suspend deadlock [CPUFREQ] Fix powernow-k8 SMP kernel on UP hardware bug. [PATCH] redirect speedstep-centrino maintainer mail to cpufreq list [CPUFREQ] correct powernow-k8 fid/vid masks for extended parts [CPUFREQ] Clarify powernow-k8 cpu_family statements
| * | [CPUFREQ] Fix powernow-k8 SMP kernel on UP hardware bug.Randy Dunlap2006-06-21
| | | | | | | | | | | | | | | | | | | | | | | | Fix powernow-k8 doesn't load bug. Reference: https://launchpad.net/distros/ubuntu/+source/linux-source-2.6.15/+bug/35145 Signed-off-by: Ben Collins <bcollins@ubuntu.com> Signed-off-by: Dave Jones <davej@redhat.com>
| * | [PATCH] redirect speedstep-centrino maintainer mail to cpufreq listJeremy Fitzhardinge2006-06-21
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | I haven't really maintained this driver for a while, and I'm not keeping up with the latest in Intel power management. I get a steady stream of mail which I don't really do anything useful with; the cpufreq list seems like a better destination, unless someone wants to get the mail directly. Also clean up a couple of ancient comments which don't really apply anymore (as far as I know, nobody has ever damaged a CPU with this driver). Signed-off-by: Jeremy Fitzhardinge <jeremy@goop.org> Signed-off-by: Dave Jones <davej@redhat.com>
| * | [CPUFREQ] correct powernow-k8 fid/vid masks for extended partsLangsdorf, Mark2006-06-20
| | | | | | | | | | | | | | | | | | | | | | | | | | | The fid/vid masks for parts using the extended parts are slightly incorrect and can result in incorrect fid/vid codes being applied. No instances of this problem have been reported in the field but it could be a problem with future parts. Signed-off-by: Mark Langsdorf <mark.langsdorf@amd.com> Signed-off-by: Dave Jones <davej@redhat.com>
| * | [CPUFREQ] Clarify powernow-k8 cpu_family statementsLangsdorf, Mark2006-06-20
| | | | | | | | | | | | | | | | | | | | | | | | This patch clarifies the meaning of the cpu_family if statements in the hw pstate driver patch for powernow-k8 Signed-off-by: Mark Langsdorf <mark.langsdorf@amd.com> Signed-off-by: Dave Jones <davej@redhat.com>
* | | Merge git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpcLinus Torvalds2006-06-23
|\ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc: (139 commits) [POWERPC] re-enable OProfile for iSeries, using timer interrupt [POWERPC] support ibm,extended-*-frequency properties [POWERPC] Extra sanity check in EEH code [POWERPC] Dont look for class-code in pci children [POWERPC] Fix mdelay badness on shared processor partitions [POWERPC] disable floating point exceptions for init [POWERPC] Unify ppc syscall tables [POWERPC] mpic: add support for serial mode interrupts [POWERPC] pseries: Print PCI slot location code on failure [POWERPC] spufs: one more fix for 64k pages [POWERPC] spufs: fail spu_create with invalid flags [POWERPC] spufs: clear class2 interrupt status before wakeup [POWERPC] spufs: fix Makefile for "make clean" [POWERPC] spufs: remove stop_code from struct spu [POWERPC] spufs: fix spu irq affinity setting [POWERPC] spufs: further abstract priv1 register access [POWERPC] spufs: split the Cell BE support into generic and platform dependant parts [POWERPC] spufs: dont try to access SPE channel 1 count [POWERPC] spufs: use kzalloc in create_spu [POWERPC] spufs: fix initial state of wbox file ... Manually resolved conflicts in: drivers/net/phy/Makefile include/asm-powerpc/spu.h
| * | | [POWERPC] re-enable OProfile for iSeries, using timer interruptKelly Daly2006-06-21
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch removes the changes from an earlier patch that disables oProfile for iSeries within the oProfile KConfig (submitted Feb 23, 2006). Checks within the arch init for iSeries, still allowing profiling for timer interrupts (using firmware_has_feature). Signed-off-by: Kelly Daly <kelly@au.ibm.com> Acked-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
| * | | [POWERPC] support ibm,extended-*-frequency propertiesAnton Blanchard2006-06-21
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Support the ibm,extended-*-frequency properties found in recent POWER5 firmware: cpus/PowerPC,POWER5@0/clock-frequency 59aa5880 (1504336000) cpus/PowerPC,POWER5@0/ibm,extended-clock-frequency 00000000 59aa5880 cpus/PowerPC,POWER5@0/timebase-frequency 0b354b10 (188042000) cpus/PowerPC,POWER5@0/ibm,extended-timebase-frequency 00000000 0b354b10 Signed-off-by: Anton Blanchard <anton@samba.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
| * | | [POWERPC] Extra sanity check in EEH codeNathan Lynch2006-06-21
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Don't dereference a device node that isn't there. A "shouldn't happen" case, but someone ran into it with a possibly misconfigured device tree. Signed-off-by: Nathan Lynch <ntl@pobox.com> Signed-off-by: Anton Blanchard <anton@samba.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
| * | | [POWERPC] Dont look for class-code in pci childrenAnton Blanchard2006-06-21
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Looking for class-code in PCI children breaks with direct slots. Lets just count all children. Signed-off-by: Anton Blanchard <anton@samba.org> Acked-by: Olof Johansson <olof@lixom.net> Signed-off-by: Paul Mackerras <paulus@samba.org>
| * | | [POWERPC] Unify ppc syscall tablesAndreas Schwab2006-06-21
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Avoid duplication of the syscall table for the cell platform. Based on an idea from David Woodhouse. Signed-off-by: Andreas Schwab <schwab@suse.de> Acked-by: Arnd Bergmann <arnd.bergmann@de.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
| * | | [POWERPC] mpic: add support for serial mode interruptsMark A. Greer2006-06-21
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | On Tue, Jun 20, 2006 at 02:01:26PM +1000, Benjamin Herrenschmidt wrote: > On Mon, 2006-06-19 at 13:08 -0700, Mark A. Greer wrote: > > MPC10x-style interrupt controllers have a serial mode that allows > > several interrupts to be clocked in through one INT signal. > > > > This patch adds the software support for that mode. > > You hard code the clock ratio... why not add a separate call to be > called after mpic_init, > something like mpic_set_serial_int(int mpic, int enable, int > clock_ratio) ? How's this? -- MPC10x-style interrupt controllers have a serial mode that allows several interrupts to be clocked in through one INT signal. This patch adds the software support for that mode. Signed-off-by: Mark A. Greer <mgreer@mvista.com> -- arch/powerpc/sysdev/mpic.c | 20 ++++++++++++++++++++ include/asm-powerpc/mpic.h | 10 ++++++++++ 2 files changed, 30 insertions(+) -- Signed-off-by: Paul Mackerras <paulus@samba.org>
| * | | [POWERPC] pseries: Print PCI slot location code on failureLinas Vepstas2006-06-21
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The PCI error recovery code will printk diagnostic info when a PCI error event occurs. Change the messages to include the slot location code, which is how most sysadmins will know the device. Signed-off-by: Linas Vepstas <linas@austin.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
| * | | [POWERPC] spufs: one more fix for 64k pagesarnd@arndb.de2006-06-21
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The SPU context save/restore code is currently built for a 4k page size and we provide a _shipped version of it since most people don't have the spu toolchain that is needed to rebuild that code. This patch hardcodes the data structures to a 64k page alignment, which also guarantees 4k alignment but unfortunately wastes 60k of memory per SPU context that is created in the running system. We will follow up on this with another patch to reduce that overhead or maybe redo the context save/restore logic to do this part entirely different, but for now it should make experimental systems work with either page size. Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
| * | | [POWERPC] spufs: fail spu_create with invalid flagsarnd@arndb.de2006-06-21
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | At this time, all flags are invalid. Since we are planning to actually add valid flags in the future, we better check if any were passed by the user. Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
| * | | [POWERPC] spufs: clear class2 interrupt status before wakeupMasato Noguchi2006-06-21
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | SPU interrupt status must be cleared before handle it. Otherwise, kernel may drop some interrupt packet. Currently, class2 interrupt treated like: 1) call callback to wake up waiting process 2) mask raised mailbox interrupt 3) clear interrupt status I changed like: 1) mask raised mailbox interrupt 2) clear interrupt status 3) call callback to wake up waiting process Clearing status before masking will make spurious interrupt. Thus, it is necessary to hold by steps I described above, I think. Signed-off-by: Masato Noguchi <Masato.Noguchi@jp.sony.com> Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
| * | | [POWERPC] spufs: fix Makefile for "make clean"Masato Noguchi2006-06-21
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | added spu_{save,restore}_dump.h to target of 'make clean' Signed-off-by: Masato Noguchi <Masato.Noguchi@jp.sony.com> Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
| * | | [POWERPC] spufs: remove stop_code from struct spuMasato Noguchi2006-06-21
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch remove 'stop_code' -- discarded member of struct spu. It is written at initialize and interrupt, but never read in current implementation. Signed-off-by: Masato Noguchi <Masato.Noguchi@jp.sony.com> Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
| * | | [POWERPC] spufs: fix spu irq affinity settingGeoff Levand2006-06-21
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This changes the hypervisor abstraction of setting cpu affinity to a higher level to avoid platform dependent interrupt controller routines. I replaced spu_priv1_ops:spu_int_route_set() with a new routine spu_priv1_ops:spu_cpu_affinity_set(). As a by-product, this change eliminated what looked like an existing bug in the set affinity code where spu_int_route_set() mistakenly called int_stat_get(). Signed-off-by: Geoff Levand <geoffrey.levand@am.sony.com> Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
| * | | [POWERPC] spufs: further abstract priv1 register accessGeoff Levand2006-06-21
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | To support muti-platform binaries the spu hypervisor accessor routines must have runtime binding. I removed the existing statically linked routines in spu.h and spu_priv1_mmio.c and created new accessor routines in spu_priv1.h that operate indirectly through an ops struct spu_priv1_ops. spu_priv1_mmio.c contains the instance of the accessor routines for running on raw hardware. Signed-off-by: Geoff Levand <geoffrey.levand@am.sony.com> Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
| * | | [POWERPC] spufs: split the Cell BE support into generic and platform ↵Geoff Levand2006-06-21
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | dependant parts Creates new config variables PPC_CELL_NATIVE and PPC_IBM_CELL_BLADE. The existing CONFIG_PPC_CELL is now used to denote the generic Cell processor support. PPC_CELL = make descends into platforms/cell PPC_CELL_NATIVE = add bare metal support PPC_IBM_CELL_BLADE = add blade device drivers, etc. Also renames spu_priv1.c to spu_priv1_mmio.c. Signed-off-by: Geoff Levand <geoffrey.levand@am.sony.com> Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
| * | | [POWERPC] spufs: dont try to access SPE channel 1 countarnd@arndb.de2006-06-21
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The save/restore sequence for SPE contexts currently attempts to save and restore the channel count for SPE channel 1 (the SPU_WriteEventMask channel. But the CBE architecture (section 9.11.2) clearly states that this channel does not have an associated count. Hardware simply ignores the attempt to write this count, but the simulator generates a warning message. WARNING: 279721590: SPE7: Attempt to write channel count for CH 1 with no associated count is ignored. Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
| * | | [POWERPC] spufs: use kzalloc in create_spuJeremy Kerr2006-06-21
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Clean up create_spu() a little by using kzalloc instead of kmalloc + assignments. Signed-off-by: Jeremy Kerr <jk@ozlabs.org> Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
| * | | [POWERPC] spufs: fix initial state of wbox filearnd@arndb.de2006-06-21
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The wbox channel count of an spu is now initialized to four for the saved context. This makes it possible to write to the mailbox right away without waiting for the SPE to become scheduled first. Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
| * | | [POWERPC] spufs: add a phys-id attribute to each SPU contextarnd@arndb.de2006-06-21
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | For performance analysis, it is often interesting to know which physical SPE a thread is currently running on, and, more importantly, if it is running at all. This patch adds a simple attribute to each SPU directory with that information. The attribute is read-only and called 'phys-id'. It contains an ascii string with the number of the physical SPU (e.g. "0x5"), or alternatively the string "0xffffffff" (32 bit -1) when it is not running at all at the time that the file is read. Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
| * | | [POWERPC] spufs: set up correct SLB entries for 64k pagesarnd@arndb.de2006-06-21
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | spufs currently knows only 4k pages and 16M hugetlb pages. Make it use the regular methods for deciding on the SLB bits. Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
| * | | [POWERPC] spufs: fix deadlock in spu_create error pathMichael Ellerman2006-06-21
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | spufs_rmdir tries to acquire the spufs root i_mutex, which is already held by spufs_create_thread. This was tracked as Bug #H9512. Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
| * | | [POWERPC] spufs: restore mapping of mssync registerarnd@arndb.de2006-06-21
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | A recent change to the way that the mfc file gets mapped made it impossible to map the SPE Multi-Source Synchronization register into user space, but that may be needed by some applications. This restores the missing functionality. Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
| * | | [POWERPC] cell: always build spu base into the kernelarnd@arndb.de2006-06-21
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The spu_base module is rather deeply intermixed with the core kernel, so it makes sense to have that built-in. This will let us extend the base in the future without having to export more core symbols just for it. Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
| * | | [POWERPC] cell: register SPUs as sysdevsJeremy Kerr2006-06-21
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | SPUs are registered as system devices, exposing attributes through sysfs. Since the sysdev includes a kref, we can remove the one in struct spu (it isn't used at the moment anyway). Currently only the interrupt source and numa node attributes are added. Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
generated by cgit v1.2.2 (git 2.25.0) at 2024-11-12 21:15:02 -0500