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* iomap: fix 64 bits resources on 32 bitsBenjamin Herrenschmidt2008-04-29
| | | | | | | | | | | | | | Almost all implementations of pci_iomap() in the kernel, including the generic lib/iomap.c one, copies the content of a struct resource into unsigned long's which will break on 32 bits platforms with 64 bits resources. This fixes all definitions of pci_iomap() to use resource_size_t. I also "fixed" the 64bits arch for consistency. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: <linux-arch@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6Linus Torvalds2008-04-28
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6: sparc: video drivers: add facility level sparc: tcx.c make tcx_init and tcx_exit static sparc: ffb.c make ffb_init and ffb_exit static sparc: cg14.c make cg14_init and cg15_exit static sparc: bw2.c fix bw2_exit sparc64: Fix accidental syscall restart on child return from clone/fork/vfork. sparc64: Clean up handling of pt_regs trap type encoding. sparc: Remove old style signal frame support. sparc64: Kill bogus RT_ALIGNEDSZ macro from signal.c sparc: sunzilog.c remove unused argument sparc: fix drivers/video/tcx.c warning sparc64: Kill unused local ISA bus layer. input: Rewrite sparcspkr device probing. sparc64: Do not ignore 'pmu' device ranges. sparc64: Kill ISA_FLOPPY_WORKS code. sparc64: Kill CONFIG_SPARC32_COMPAT sparc64: Cleanups and corrections for arch/sparc64/Kconfig sparc64: Fix wedged irq regression.
| * sparc64: Fix accidental syscall restart on child return from clone/fork/vfork.David S. Miller2008-04-27
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This fixes a regression added by 238468b2ac76020c192a7402c92df5097916bf4a ("[SPARC64]: Use trap type stored in pt_regs to handle syscall restart.") Because we now encode the "returning from syscall" status in the pt_regs area, we have to be mindful to zap it out in the child of a fork. During a parallel kernel build I saw an accidental -EINTR return from vfork() in 'make' because of this bug. Signed-off-by: David S. Miller <davem@davemloft.net>
| * sparc64: Clean up handling of pt_regs trap type encoding.David S. Miller2008-04-27
| | | | | | | | | | | | | | | | | | | | | | | | | | If we use this from more than one place, it's better to have helpers instead of twiddling magic constants all over. Add pt_regs_trap_type(), pt_regs_clear_trap_type(), and pt_regs_is_syscall(). Use them in do_signal(). Signed-off-by: David S. Miller <davem@davemloft.net>
| * sparc: Remove old style signal frame support.David S. Miller2008-04-27
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Back around the same time we were bootstrapping the first 32-bit sparc Linux kernel with a SunOS userland, we made the signal frame match that of SunOS. By the time we even started putting together a native Linux userland for 32-bit Sparc we realized this layout wasn't sufficient for Linux's needs. Therefore we changed the layout, yet kept support for the old style signal frame layout in there. The detection mechanism is that we had sys_sigaction() start passing in a negative signal number to indicate "new style signal frames please". Anyways, no binaries exist in the world that use the old stuff. In fact, I bet Jakub Jelinek and myself are the only two people who ever had such binaries to be honest. So let's get rid of this stuff. I added an assertion using WARN_ON_ONCE() that makes sure 32-bit applications are passing in that negative signal number still. Signed-off-by: David S. Miller <davem@davemloft.net>
| * sparc64: Kill bogus RT_ALIGNEDSZ macro from signal.cDavid S. Miller2008-04-27
| | | | | | | | | | | | | | The structure has to be 8-byte aligned in size, so this macro is just noise. Signed-off-by: David S. Miller <davem@davemloft.net>
| * sparc64: Kill unused local ISA bus layer.David S. Miller2008-04-27
| | | | | | | | | | | | No more drivers use this, and therefore it can die. Signed-off-by: David S. Miller <davem@davemloft.net>
| * sparc64: Do not ignore 'pmu' device ranges.David S. Miller2008-04-27
| | | | | | | | | | | | | | | | I must have disabled this due to other bugs which were fixed over time. And this is needed in order for child devices of "pmu" to get proper resource values. Signed-off-by: David S. Miller <davem@davemloft.net>
| * sparc64: Kill CONFIG_SPARC32_COMPATDavid S. Miller2008-04-27
| | | | | | | | | | | | | | | | | | | | | | | | | | It's completely superfluous, CONFIG_COMPAT is sufficient. What this used to be is an umbrella for enabling code shared by all 32-bit compat binary support types. But with the removal of SunOS and Solaris support, the only one left is Linux 32-bit ELF. Update defconfig. Signed-off-by: David S. Miller <davem@davemloft.net>
| * sparc64: Cleanups and corrections for arch/sparc64/KconfigDavid S. Miller2008-04-27
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Refer to chip as "SPARC" throughout. Say 32-bit SPARC and 64-bit SPARC rather than mentioning specific chips such like UltraSPARC, as appropriate. Remove non-sense help text referring to things that will never appear on a SPARC system, such as EISA busses etc. Use "help" instead of "--help--" Signed-off-by: David S. Miller <davem@davemloft.net>
| * sparc64: Fix wedged irq regression.David S. Miller2008-04-27
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Kernel bugzilla 10273 As reported by Jos van der Ende, ever since commit 5a606b72a4309a656cd1a19ad137dc5557c4b8ea ("[SPARC64]: Do not ACK an INO if it is disabled or inprogress.") sun4u interrupts can get stuck. What this changset did was add the following conditional to the various IRQ chip ->enable() handlers on sparc64: if (unlikely(desc->status & (IRQ_DISABLED|IRQ_INPROGRESS))) return; which is correct, however it means that special care is needed in the ->enable() method. Specifically we must put the interrupt into IDLE state during an enable, or else it might never be sent out again. Setting the INO interrupt state to IDLE resets the state machine, the interrupt input to the INO is retested by the hardware, and if an interrupt is being signalled by the device, the INO moves back into TRANSMIT state, and an interrupt vector is sent to the cpu. The two sun4v IRQ chip handlers were already doing this properly, only sun4u got it wrong. Signed-off-by: David S. Miller <davem@davemloft.net>
* | pageflags: get rid of FLAGS_RESERVEDChristoph Lameter2008-04-28
|/ | | | | | | | | | | | | | | | | | | | | | NR_PAGEFLAGS specifies the number of page flags we are using. From that we can calculate the number of bits leftover that can be used for zone, node (and maybe the sections id). There is no need anymore for FLAGS_RESERVED if we use NR_PAGEFLAGS. Use the new methods to make NR_PAGEFLAGS available via the preprocessor. NR_PAGEFLAGS is used to calculate field boundaries in the page flags fields. These field widths have to be available to the preprocessor. Signed-off-by: Christoph Lameter <clameter@sgi.com> Cc: David Miller <davem@davemloft.net> Cc: Andy Whitcroft <apw@shadowen.org> Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Cc: Rik van Riel <riel@redhat.com> Cc: Mel Gorman <mel@csn.ul.ie> Cc: Jeremy Fitzhardinge <jeremy@goop.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* [SPARC64]: Wrap SMP IPIs with irq_enter()/irq_exit().David S. Miller2008-04-25
| | | | | | | | | | | | | Otherwise all sorts of bad things can happen, including spurious softlockup reports. Other platforms have this same bug, in one form or another, just don't see the issue because they don't sleep as long as sparc64 can in NOHZ. Thanks to some brilliant debugging by Peter Zijlstra. Signed-off-by: David S. Miller <davem@davemloft.net>
* [SPARC64]: Fix args to 64-bit sys_semctl() via sys_ipc().David S. Miller2008-04-25
| | | | | | | | Second and third arguments were swapped for whatever reason. Reported by Tom Callaway. Signed-off-by: David S. Miller <davem@davemloft.net>
* [SPARC64]: Detect trap frames in stack backtraces.David S. Miller2008-04-24
| | | | | | | Now that we have a magic cookie in the pt_regs, we can properly detect trap frames in stack bactraces. Signed-off-by: David S. Miller <davem@davemloft.net>
* [SPARC64]: %l6 trap return handling no longer necessary.David S. Miller2008-04-24
| | | | | | | | | | Now that we indicate the "restart system call" in the trap type field of pt_regs->magic, we don't need to set the %l6 boolean in all of the trap return paths. And we therefore don't need to pass it to do_notify_resume(). Signed-off-by: David S. Miller <davem@davemloft.net>
* [SPARC64]: Use trap type stored in pt_regs to handle syscall restart.David S. Miller2008-04-24
| | | | | | | Now that we can check the trap type directly, we don't need the funny restart_syscall indication from the trap return paths. Signed-off-by: David S. Miller <davem@davemloft.net>
* [SPARC64]: Store magic cookie and trap type in pt_regs.David S. Miller2008-04-24
| | | | | | | | | | | | | | | | | | | This sets us up for several simplifications and facilities: 1) The magic cookie lets us identify trap frames more accurately in stack backtraces. 2) The trap type lets us simplify all of the "are we in a syscall" state management and checks. 3) We can now see if a task off the cpu is sleeping in a system call or not. In fact, we can see what trap it is sleeping in whatever the type. The utrace guys will use this. Based upon some discussions with Roland McGrath. Signed-off-by: David S. Miller <davem@davemloft.net>
* [SPARC64]: PROM debug console can be CON_ANYTIME.David S. Miller2008-04-24
| | | | | | | No per-cpu or similar resources need to be setup before we can use this console device. Signed-off-by: David S. Miller <davem@davemloft.net>
* sparc64: cleanup after SunOS/Solaris binary emulation removalAdrian Bunk2008-04-24
| | | | | | | | | | The following cleanups are now possible: - arch/sparc64/kernel/entry.S:ret_sys_call no longer has to be global - arch/sparc64/kernel/sparc64_ksyms.c: remove no longer used prototypes Signed-off-by: Adrian Bunk <bunk@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* [SPARC64]: Add NUMA support.David S. Miller2008-04-24
| | | | | | | | Currently there is only code to parse NUMA attributes on sun4v/niagara systems, but later on we will add such parsing for older systems. Signed-off-by: David S. Miller <davem@davemloft.net>
* [SPARC64]: Allocate TSB node-local.David S. Miller2008-04-24
| | | | Signed-off-by: David S. Miller <davem@davemloft.net>
* [SPARC64]: NUMA device infrastructure.David S. Miller2008-04-24
| | | | | | Record and propagate NUMA information for devices. Signed-off-by: David S. Miller <davem@davemloft.net>
* [SPARC64]: Kill pci_iommu_table_init() declaration.David S. Miller2008-04-24
| | | | | | No longer exists. Signed-off-by: David S. Miller <davem@davemloft.net>
* [SPARC64]: Once we have the boot cmdline, call parse_early_param()David S. Miller2008-04-24
| | | | Signed-off-by: David S. Miller <davem@davemloft.net>
* [SPARC64]: Initialize MDESC earlier and use lmb_alloc()David S. Miller2008-04-24
| | | | Signed-off-by: David S. Miller <davem@davemloft.net>
* [SPARC64]: Use lmb_alloc() for PROM device tree.David S. Miller2008-04-24
| | | | Signed-off-by: David S. Miller <davem@davemloft.net>
* [SPARC64]: Call real_setup_per_cpu_areas() earlier and use lmb_alloc().David S. Miller2008-04-24
| | | | | | | We have to do it like this before we can move the PROM and MDESC device tree code over to using lmb_alloc(). Signed-off-by: David S. Miller <davem@davemloft.net>
* [SPARC64]: Fully use LMB information in bootmem_init().David S. Miller2008-04-24
| | | | Signed-off-by: David S. Miller <davem@davemloft.net>
* [SPARC64]: Start using LMB information in bootmem_init().David S. Miller2008-04-24
| | | | | | | This allows us to kill the incredibly complicated and stupid function trim_pavail(). Signed-off-by: David S. Miller <davem@davemloft.net>
* [SPARC64]: Initialize LMB tables.David S. Miller2008-04-24
| | | | | | | Call lmb_add() on available regions, and call lmb_reserve() on the main kernel image and the ramdisk (if any). Signed-off-by: David S. Miller <davem@davemloft.net>
* [SPARC64]: Move ramdisk discovery code out to seperate function.David S. Miller2008-04-24
| | | | | | | And add some comments explaining all of the quirks involved in the way the bootloader provides this information. Signed-off-by: David S. Miller <davem@davemloft.net>
* Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6Linus Torvalds2008-04-21
|\ | | | | | | | | * git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6: [SPARC]: Remove SunOS and Solaris binary support.
| * [SPARC]: Remove SunOS and Solaris binary support.David S. Miller2008-04-21
| | | | | | | | | | | | As per Documentation/feature-removal-schedule.txt Signed-off-by: David S. Miller <davem@davemloft.net>
* | Merge branch 'master' of ↵Linus Torvalds2008-04-21
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc * 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc: (202 commits) [POWERPC] Fix compile breakage for 64-bit UP configs [POWERPC] Define copy_siginfo_from_user32 [POWERPC] Add compat handler for PTRACE_GETSIGINFO [POWERPC] i2c: Fix build breakage introduced by OF helpers [POWERPC] Optimize fls64() on 64-bit processors [POWERPC] irqtrace support for 64-bit powerpc [POWERPC] Stacktrace support for lockdep [POWERPC] Move stackframe definitions to common header [POWERPC] Fix device-tree locking vs. interrupts [POWERPC] Make pci_bus_to_host()'s struct pci_bus * argument const [POWERPC] Remove unused __max_memory variable [POWERPC] Simplify xics direct/lpar irq_host setup [POWERPC] Use pseries_setup_i8259_cascade() in pseries_mpic_init_IRQ() [POWERPC] Turn xics_setup_8259_cascade() into a generic pseries_setup_i8259_cascade() [POWERPC] Move xics_setup_8259_cascade() into platforms/pseries/setup.c [POWERPC] Use asm-generic/bitops/find.h in bitops.h [POWERPC] 83xx: mpc8315 - fix USB UTMI Host setup [POWERPC] 85xx: Fix the size of qe muram for MPC8568E [POWERPC] 86xx: mpc86xx_hpcn - Temporarily accept old dts node identifier. [POWERPC] 86xx: mark functions static, other minor cleanups ...
| * \ Merge branch 'linux-2.6'Paul Mackerras2008-04-14
| |\ \
| * \ \ Merge branch 'linux-2.6'Paul Mackerras2008-03-25
| |\ \ \
| * \ \ \ Merge branch 'linux-2.6'Paul Mackerras2008-03-13
| |\ \ \ \
| * \ \ \ \ Merge master.kernel.org:/pub/scm/linux/kernel/git/davem/lmb-2.6Paul Mackerras2008-02-26
| |\ \ \ \ \
| | * | | | | [LIB]: Make PowerPC LMB code generic so sparc64 can use it too.David S. Miller2008-02-13
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Signed-off-by: David S. Miller <davem@davemloft.net>
* | | | | | | arch: Remove unnecessary inclusions of asm/semaphore.hMatthew Wilcox2008-04-18
| |_|_|_|_|/ |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | None of these files use any of the functionality promised by asm/semaphore.h. It's possible that they rely on it dragging in some unrelated header file, but I can't build all these files, so we'll have fix any build failures as they come up. Signed-off-by: Matthew Wilcox <willy@linux.intel.com>
* | | | | | Generic semaphore implementationMatthew Wilcox2008-04-17
| |_|_|_|/ |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Semaphores are no longer performance-critical, so a generic C implementation is better for maintainability, debuggability and extensibility. Thanks to Peter Zijlstra for fixing the lockdep warning. Thanks to Harvey Harrison for pointing out that the unlikely() was unnecessary. Signed-off-by: Matthew Wilcox <willy@linux.intel.com> Acked-by: Ingo Molnar <mingo@elte.hu>
* | | | | [SPARC]: Fix several regset and ptrace bugs.David S. Miller2008-04-09
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 1) ptrace should pass 'current' to task_user_regset_view() 2) When fetching general registers using a 64-bit view, and the target is 32-bit, we have to convert. 3) Skip the whole register window get/set code block if the user isn't asking to access anything in there. Otherwise we have problems if the user doesn't have an address space setup. Fetching ptrace register is still valid at such a time, and ptrace does not try to access the register window area of the regset. Signed-off-by: David S. Miller <davem@davemloft.net>
* | | | | [SPARC64]: Fix user accesses in regset code.David S. Miller2008-04-03
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | If target is not current we need to use access_process_vm(). Noticed by Roland McGrath. Signed-off-by: David S. Miller <davem@davemloft.net>
* | | | | [SPARC64]: Fix FPU saving in 64-bit signal handling.David S. Miller2008-04-03
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The calculation of the FPU reg save area pointer was wrong. Based upon an OOPS report from Tom Callaway. Signed-off-by: David S. Miller <davem@davemloft.net>
* | | | | sparc64: remove unused calc_npages() in iommu_common.hFUJITA Tomonori2008-03-28
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* | | | | sparc64: add the segment boundary checking to IOMMUs while merging SG entriesFUJITA Tomonori2008-03-28
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Some IOMMUs allocate memory areas spanning LLD's segment boundary limit. It forces low level drivers to have a workaround to adjust scatter lists that the IOMMU builds. We are in the process of making all the IOMMUs respect the segment boundary limits to remove such work around in LLDs. SPARC64 IOMMUs were rewritten to use the IOMMU helper functions and the commit 89c94f2f70d093f59b55d3ea8042d13889169346 made the IOMMUs not allocate memory areas spanning the segment boundary limit. However, SPARC64 IOMMUs allocate memory areas first then try to merge them (while some IOMMUs walk through all the sg entries to see how they can be merged first and allocate memory areas). So SPARC64 IOMMUs also need the boundary limit checking when they try to merge sg entries. Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* | | | | [SPARC64]: Don't open-code {get,put}_cpu_var() in flush_tlb_pending().David S. Miller2008-03-28
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Noticed by Andrew Morton. Signed-off-by: David S. Miller <davem@davemloft.net>
* | | | | Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6Linus Torvalds2008-03-26
|\ \ \ \ \ | |_|_|_|/ |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6: [SPARC64]: Define TASK_SIZE_OF() [SPARC64]: flush_ptrace_access() needs preemption disable. [SPARC64]: Update defconfig. [SPARC64]: Fix allnoconfig build, ptrace.c missing CONFIG_COMPAT checks. [SPARC64]: Fix __get_cpu_var in preemption-enabled area. [SPARC64]: Fix sparse warnings in arch/sparc64/kernel/signal.c [SPARC64]: Fix most sparse warnings in arch/sparc64/kernel/sys_sparc.c [SPARC64]: Fix sparse warnings in arch/sparc64/kernel/time.c [SPARC64]: Fix sparse warnings in arch/sparc64/kernel/ptrace.c [SPARC64]: Fix sparse warnings in arch/sparc64/kernel/irq.c [SPARC64]: Fix sparse warnings in arch/sparc64/kernel/iommu.c [SPARC64]: Fix sparse errors in arch/sparc64/kernel/traps.c [SPARC64]: Fix sparse warnings in arch/sparc64/kernel/{cpu,setup}.c [SPARC64]: Adjust {TLBTEMP,TSBMAP}_BASE. [SPARC64]: Make save_stack_trace() more efficient.
| * | | | [SPARC64]: flush_ptrace_access() needs preemption disable.David S. Miller2008-03-26
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Based upon a report by Mariusz Kozlowski. Signed-off-by: David S. Miller <davem@davemloft.net>
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