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* [PATCH] replace cad_pid by a struct pidCedric Le Goater2006-10-021-2/+1
| | | | | | | | | | | | | | | | | | | | | | | | | There are a few places in the kernel where the init task is signaled. The ctrl+alt+del sequence is one them. It kills a task, usually init, using a cached pid (cad_pid). This patch replaces the pid_t by a struct pid to avoid pid wrap around problem. The struct pid is initialized at boot time in init() and can be modified through systctl with /proc/sys/kernel/cad_pid [ I haven't found any distro using it ? ] It also introduces a small helper routine kill_cad_pid() which is used where it seemed ok to use cad_pid instead of pid 1. [akpm@osdl.org: cleanups, build fix] Signed-off-by: Cedric Le Goater <clg@fr.ibm.com> Cc: Eric W. Biederman <ebiederm@xmission.com> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Paul Mackerras <paulus@samba.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] namespaces: utsname: use init_utsname when appropriateSerge E. Hallyn2006-10-021-1/+1
| | | | | | | | | | | | | | | | | | | | | In some places, particularly drivers and __init code, the init utsns is the appropriate one to use. This patch replaces those with a the init_utsname helper. Changes: Removed several uses of init_utsname(). Hope I picked all the right ones in net/ipv4/ipconfig.c. These are now changed to utsname() (the per-process namespace utsname) in the previous patch (2/7) [akpm@osdl.org: CIFS fix] Signed-off-by: Serge E. Hallyn <serue@us.ibm.com> Cc: Kirill Korotaev <dev@openvz.org> Cc: "Eric W. Biederman" <ebiederm@xmission.com> Cc: Herbert Poetzl <herbert@13thfloor.at> Cc: Andrey Savochkin <saw@sw.ru> Cc: Serge Hallyn <serue@us.ibm.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] irq-flags: PARISC: Use the new IRQF_ constantsThomas Gleixner2006-07-022-2/+2
| | | | | | | | | | | | Use the new IRQF_ constants and remove the SA_INTERRUPT define Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Ingo Molnar <mingo@elte.hu> Cc: "David S. Miller" <davem@davemloft.net> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Kyle McMartin <kyle@mcmartin.ca> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* Merge git://git.kernel.org/pub/scm/linux/kernel/git/bunk/trivialLinus Torvalds2006-06-306-6/+0
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * git://git.kernel.org/pub/scm/linux/kernel/git/bunk/trivial: Remove obsolete #include <linux/config.h> remove obsolete swsusp_encrypt arch/arm26/Kconfig typos Documentation/IPMI typos Kconfig: Typos in net/sched/Kconfig v9fs: do not include linux/version.h Documentation/DocBook/mtdnand.tmpl: typo fixes typo fixes: specfic -> specific typo fixes in Documentation/networking/pktgen.txt typo fixes: occuring -> occurring typo fixes: infomation -> information typo fixes: disadvantadge -> disadvantage typo fixes: aquire -> acquire typo fixes: mecanism -> mechanism typo fixes: bandwith -> bandwidth fix a typo in the RTC_CLASS help text smb is no longer maintained Manually merged trivial conflict in arch/um/kernel/vmlinux.lds.S
| * Remove obsolete #include <linux/config.h>Jörn Engel2006-06-306-6/+0
| | | | | | | | | | Signed-off-by: Jörn Engel <joern@wohnheim.fh-wedel.de> Signed-off-by: Adrian Bunk <bunk@stusta.de>
* | [PATCH] Light weight event countersChristoph Lameter2006-06-301-5/+6
|/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The remaining counters in page_state after the zoned VM counter patches have been applied are all just for show in /proc/vmstat. They have no essential function for the VM. We use a simple increment of per cpu variables. In order to avoid the most severe races we disable preempt. Preempt does not prevent the race between an increment and an interrupt handler incrementing the same statistics counter. However, that race is exceedingly rare, we may only loose one increment or so and there is no requirement (at least not in kernel) that the vm event counters have to be accurate. In the non preempt case this results in a simple increment for each counter. For many architectures this will be reduced by the compiler to a single instruction. This single instruction is atomic for i386 and x86_64. And therefore even the rare race condition in an interrupt is avoided for both architectures in most cases. The patchset also adds an off switch for embedded systems that allows a building of linux kernels without these counters. The implementation of these counters is through inline code that hopefully results in only a single instruction increment instruction being emitted (i386, x86_64) or in the increment being hidden though instruction concurrency (EPIC architectures such as ia64 can get that done). Benefits: - VM event counter operations usually reduce to a single inline instruction on i386 and x86_64. - No interrupt disable, only preempt disable for the preempt case. Preempt disable can also be avoided by moving the counter into a spinlock. - Handling is similar to zoned VM counters. - Simple and easily extendable. - Can be omitted to reduce memory use for embedded use. References: RFC http://marc.theaimsgroup.com/?l=linux-kernel&m=113512330605497&w=2 RFC http://marc.theaimsgroup.com/?l=linux-kernel&m=114988082814934&w=2 local_t http://marc.theaimsgroup.com/?l=linux-kernel&m=114991748606690&w=2 V2 http://marc.theaimsgroup.com/?t=115014808400007&r=1&w=2 V3 http://marc.theaimsgroup.com/?l=linux-kernel&m=115024767022346&w=2 V4 http://marc.theaimsgroup.com/?l=linux-kernel&m=115047968808926&w=2 Signed-off-by: Christoph Lameter <clameter@sgi.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* Merge master.kernel.org:/pub/scm/linux/kernel/git/kyle/parisc-2.6Linus Torvalds2006-06-293-36/+237
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * master.kernel.org:/pub/scm/linux/kernel/git/kyle/parisc-2.6: (23 commits) [PARISC] Move os_id_to_string() inside #ifndef __ASSEMBLY__ [PARISC] Fix do_gettimeofday() hang [PARISC] Fix PCREL22F relocation problem for most modules [PARISC] Refactor show_regs in traps.c [PARISC] Add os_id_to_string helper [PARISC] OS_ID_LINUX == 0x0006 [PARISC] Ensure Space ID hashing is turned off [PARISC] Match show_cache_info with reality [PARISC] Remove unused macro fixup_branch in syscall.S [PARISC] Add is_compat_task() helper [PARISC] Update Thibaut Varene's CREDITS entry [PARISC] Reduce data footprint in pdc_stable.c [PARISC] pdc_stable version 0.30 [PARISC] Work around machines which do not support chassis warnings [PARISC] PDC_CHASSIS is implemented on all machines [PARISC] Remove unconditional #define PIC in syscall macros [PARISC] Use MFIA in current_text_addr on pa2.0 processors [PARISC] Remove dead function pc_in_user_space [PARISC] Test ioc_needs_fdc variable instead of open coding [PARISC] Fix gcc 4.1 warnings in sba_iommu.c ...
| * [PARISC] Add os_id_to_string helperKyle McMartin2006-06-271-12/+2
| | | | | | | | | | | | | | Add a helper to asm/pdc.h to translate OS_ID values to strings and use it in the pdc_stable driver. Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>
| * [PARISC] OS_ID_LINUX == 0x0006Kyle McMartin2006-06-271-2/+2
| | | | | | | | | | | | | | | | We were assigned an OS_ID of 0x0006. Consistently use OS_ID_LINUX instead of using the magic number. Also update the OS_ID_ defines in asm/pdc.h to reflect this. Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>
| * [PARISC] Reduce data footprint in pdc_stable.cThibaut Varene2006-06-271-8/+8
| | | | | | | | | | | | | | No code change - reduce data footprint. Signed-off-by: Thibaut VARENE <varenet@parisc-linux.org> Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>
| * [PARISC] pdc_stable version 0.30Thibaut Varene2006-06-271-14/+205
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | pdc_stable v0.30: This patch introduces 3 more files to the /sys/firmware/stable tree: - diagnostic, which contains a cryptic hex string - osdep1, a 16 bytes os-dependent storage area always available - osdep2, another os-dependent storage area which existence/size depends on hversion. This patch also adds code to setup the "Linux" signature in stable storage. That is to say that starting with this patch, the kernel will now sign its OSID (0x0006, thx LaMont) in Stable Storage upon boot, whether pdc_stable is enabled or not. Signed-off-by: Thibaut VARENE <varenet@parisc-linux.org> Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>
| * [PARISC] PDC_CHASSIS is implemented on all machinesThibaut Varene2006-06-271-7/+26
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch removes a limitation of the original code, so that CHASSIS codes can be sent to all machines. On machines with a LCD panel, this code displays "INI" during bootup, "RUN" when the system is booted and running, "FLT" when a panic occurs, etc. This part of the code can be enabled/disabled through CONFIG_PDC_CHASSIS This patch also adds minimalistic support for Chassis warnings, through a proc entry '/proc/chassis', which will reflect the warnings status (PSU or fans failure when they happen, NVRAM battery level and temperature thresholds overflows). This part of the code can be enabled/disabled through CONFIG_PDC_CHASSIS_WARN Signed-off-by: Thibaut VARENE <varenet@parisc-linux.org> Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>
| * [PARISC] Test ioc_needs_fdc variable instead of open codingKyle McMartin2006-06-271-1/+1
| | | | | | | | | | | | | | Some debugging code in sba_iommu.c should be testing ioc_needs_fdc, not directly testing boot_cpu_data. Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>
| * [PARISC] Fix gcc 4.1 warnings in sba_iommu.cGrant Grundler2006-06-271-7/+8
| | | | | | | | | | | | | | | | | | | | | | Clean up gcc 4.1 warnings noted by Joel Soete. Kyle McMartin gets kudos for pointing out the issues. Matthew Wilcox noticed sba_iommu was using open coded versions of (read|write)X. Signed-off-by: Grant Grundler <grundler@parisc-linux.org> Signed-off-by: Matthew Wilcox <willy@parisc-linux.org> Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>
* | [PATCH] genirq: rename desc->handler to desc->chipIngo Molnar2006-06-295-9/+9
|/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch-queue improves the generic IRQ layer to be truly generic, by adding various abstractions and features to it, without impacting existing functionality. While the queue can be best described as "fix and improve everything in the generic IRQ layer that we could think of", and thus it consists of many smaller features and lots of cleanups, the one feature that stands out most is the new 'irq chip' abstraction. The irq-chip abstraction is about describing and coding and IRQ controller driver by mapping its raw hardware capabilities [and quirks, if needed] in a straightforward way, without having to think about "IRQ flow" (level/edge/etc.) type of details. This stands in contrast with the current 'irq-type' model of genirq architectures, which 'mixes' raw hardware capabilities with 'flow' details. The patchset supports both types of irq controller designs at once, and converts i386 and x86_64 to the new irq-chip design. As a bonus side-effect of the irq-chip approach, chained interrupt controllers (master/slave PIC constructs, etc.) are now supported by design as well. The end result of this patchset intends to be simpler architecture-level code and more consolidation between architectures. We reused many bits of code and many concepts from Russell King's ARM IRQ layer, the merging of which was one of the motivations for this patchset. This patch: rename desc->handler to desc->chip. Originally i did not want to do this, because it's a big patch. But having both "desc->handler", "desc->handle_irq" and "action->handler" caused a large degree of confusion and made the code appear alot less clean than it truly is. I have also attempted a dual approach as well by introducing a desc->chip alias - but that just wasnt robust enough and broke frequently. So lets get over with this quickly. The conversion was done automatically via scripts and converts all the code in the kernel. This renaming patch is the first one amongst the patches, so that the remaining patches can stay flexible and can be merged and split up without having some big monolithic patch act as a merge barrier. [akpm@osdl.org: build fix] [akpm@osdl.org: another build fix] Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PARISC] Document that we tolerate "Relaxed Ordering"Grant Grundler2006-04-211-13/+32
| | | | | | | | | | | | | This means "DMA Read returns" can bypass "MMIO Writes". Violating the PCI specs in this case improves outbound DMA "flows" and is currently not required by any drivers. This is NOT a new behavior. Previous chipsets did this already and I believe ZX1 PDC was already setting this for hpux. I just want to further document the behavior. Signed-off-by: Grant Grundler <grundler@parisc-linux.org> Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>
* [PARISC] Misc. janitorial workHelge Deller2006-04-212-3/+3
| | | | | | | | Fix a spelling mistake, add a KERN_INFO flag, and fix some whitespace uglies. Signed-off-by: Helge Deller <deller@parisc-linux.org> Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>
* [PARISC] I/O-Space must be ioremap_nocache()'dHelge Deller2006-03-307-40/+33
| | | | | | | Addresses in F-space must be accessed uncached on most parisc machines. Signed-off-by: Helge Deller <deller@parisc-linux.org> Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>
* [PARISC] Clarify pdc_stable license termsThibaut VARENE2006-03-301-3/+2
| | | | | | | pdc_stable.c is explicitly licensed under GPL version 2. Signed-off-by: Thibaut VARENE <varenet@parisc-linux.org> Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>
* [PATCH] Notifier chain update: API changesAlan Stern2006-03-272-4/+16
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The kernel's implementation of notifier chains is unsafe. There is no protection against entries being added to or removed from a chain while the chain is in use. The issues were discussed in this thread: http://marc.theaimsgroup.com/?l=linux-kernel&m=113018709002036&w=2 We noticed that notifier chains in the kernel fall into two basic usage classes: "Blocking" chains are always called from a process context and the callout routines are allowed to sleep; "Atomic" chains can be called from an atomic context and the callout routines are not allowed to sleep. We decided to codify this distinction and make it part of the API. Therefore this set of patches introduces three new, parallel APIs: one for blocking notifiers, one for atomic notifiers, and one for "raw" notifiers (which is really just the old API under a new name). New kinds of data structures are used for the heads of the chains, and new routines are defined for registration, unregistration, and calling a chain. The three APIs are explained in include/linux/notifier.h and their implementation is in kernel/sys.c. With atomic and blocking chains, the implementation guarantees that the chain links will not be corrupted and that chain callers will not get messed up by entries being added or removed. For raw chains the implementation provides no guarantees at all; users of this API must provide their own protections. (The idea was that situations may come up where the assumptions of the atomic and blocking APIs are not appropriate, so it should be possible for users to handle these things in their own way.) There are some limitations, which should not be too hard to live with. For atomic/blocking chains, registration and unregistration must always be done in a process context since the chain is protected by a mutex/rwsem. Also, a callout routine for a non-raw chain must not try to register or unregister entries on its own chain. (This did happen in a couple of places and the code had to be changed to avoid it.) Since atomic chains may be called from within an NMI handler, they cannot use spinlocks for synchronization. Instead we use RCU. The overhead falls almost entirely in the unregister routine, which is okay since unregistration is much less frequent that calling a chain. Here is the list of chains that we adjusted and their classifications. None of them use the raw API, so for the moment it is only a placeholder. ATOMIC CHAINS ------------- arch/i386/kernel/traps.c: i386die_chain arch/ia64/kernel/traps.c: ia64die_chain arch/powerpc/kernel/traps.c: powerpc_die_chain arch/sparc64/kernel/traps.c: sparc64die_chain arch/x86_64/kernel/traps.c: die_chain drivers/char/ipmi/ipmi_si_intf.c: xaction_notifier_list kernel/panic.c: panic_notifier_list kernel/profile.c: task_free_notifier net/bluetooth/hci_core.c: hci_notifier net/ipv4/netfilter/ip_conntrack_core.c: ip_conntrack_chain net/ipv4/netfilter/ip_conntrack_core.c: ip_conntrack_expect_chain net/ipv6/addrconf.c: inet6addr_chain net/netfilter/nf_conntrack_core.c: nf_conntrack_chain net/netfilter/nf_conntrack_core.c: nf_conntrack_expect_chain net/netlink/af_netlink.c: netlink_chain BLOCKING CHAINS --------------- arch/powerpc/platforms/pseries/reconfig.c: pSeries_reconfig_chain arch/s390/kernel/process.c: idle_chain arch/x86_64/kernel/process.c idle_notifier drivers/base/memory.c: memory_chain drivers/cpufreq/cpufreq.c cpufreq_policy_notifier_list drivers/cpufreq/cpufreq.c cpufreq_transition_notifier_list drivers/macintosh/adb.c: adb_client_list drivers/macintosh/via-pmu.c sleep_notifier_list drivers/macintosh/via-pmu68k.c sleep_notifier_list drivers/macintosh/windfarm_core.c wf_client_list drivers/usb/core/notify.c usb_notifier_list drivers/video/fbmem.c fb_notifier_list kernel/cpu.c cpu_chain kernel/module.c module_notify_list kernel/profile.c munmap_notifier kernel/profile.c task_exit_notifier kernel/sys.c reboot_notifier_list net/core/dev.c netdev_chain net/decnet/dn_dev.c: dnaddr_chain net/ipv4/devinet.c: inetaddr_chain It's possible that some of these classifications are wrong. If they are, please let us know or submit a patch to fix them. Note that any chain that gets called very frequently should be atomic, because the rwsem read-locking used for blocking chains is very likely to incur cache misses on SMP systems. (However, if the chain's callout routines may sleep then the chain cannot be atomic.) The patch set was written by Alan Stern and Chandra Seetharaman, incorporating material written by Keith Owens and suggestions from Paul McKenney and Andrew Morton. [jes@sgi.com: restructure the notifier chain initialization macros] Signed-off-by: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: Chandra Seetharaman <sekharan@us.ibm.com> Signed-off-by: Jes Sorensen <jes@sgi.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* BUG_ON() Conversion in drivers/parisc/Eric Sesterhenn2006-03-242-11/+6
| | | | | | | | this changes if() BUG(); constructs to BUG_ON() which is cleaner, contains unlikely() and can better optimized away. Signed-off-by: Eric Sesterhenn <snakebyte@gmx.de> Signed-off-by: Adrian Bunk <bunk@stusta.de>
* [PARISC] Convert sba_iommu.c to use seq_fileKyle McMartin2006-02-081-47/+78
| | | | | | | | Use seq_file interface for proc output in sba_iommu. Also clean up the bus root assignment, and give the proc files a more logical name. Tested on my J6000. Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>
* [PARISC] Convert ccio-dma.c to use seq_fileKyle McMartin2006-02-081-86/+74
| | | | | | | Gut ccio-dma.c of the ugly proc append and snprintf cruft and just use seq_printf instead. Tested on a K-class. Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>
* [PARISC] Clean up printk in superio.cKyle McMartin2006-01-221-19/+22
| | | | | | | | Clean up some of the messages printed by the superio driver by defining a prefix instead of duplicating it in every message. Also some small coding style cleanups. Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>
* [PARISC] Add chassis_power_off routineKyle McMartin2006-01-221-1/+2
| | | | | | | | | | | | | Define a chassis_power_off routine that machines which have a way to turn off the power supply can hook into. Formerly they were using pm_power_off, which is now being used by generic code. Make lasi.c use chassis_power_off instead of pm_power_off. Note, all machines need to call machine_power_off so that the switch can power off the machine, though halt -p may not necessarily be able to work properly on the machine. Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>
* [PARISC] pdc_stable version 0.22Thibaut VARENE2006-01-221-94/+262
| | | | | | | | | | | | | | | | | pdc_stable v0.22, changes since v0.10: o renamed root subsystem from 'pdc' to 'stable' o split 'info' into several files, one per PDC field o implemented 'autoboot' and 'autosearch' write calls to toggle these flags o grant read permission to all users on "safe" files o more code cleanup (removed duplicate code) o avoid bad stable storage clobbering by write locking critical sections o print consistent data as well o SMP cleanups Signed-off-by: Thibaut VARENE <varenet@parisc-linux.org> Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>
* [PARISC] Use kzalloc and other janitor-style cleanupsHelge Deller2006-01-228-23/+12
| | | | | | | | | | | | | | | | Helge, o Convert a bunch of kmalloc/memset uses to kzalloc. o pci.c: Add some __read_mostly annotations. o pci.c: Move constant pci_post_reset_delay to asm/pci.h o grfioctl.h: Add A4450A to comment of CRT_ID_VISUALIZE_EG. o Add some consts to perf.c/perf_images.h Matthew, o sticore.c: Add some consts to suppress compile warnings. Signed-off-by: Helge Deller <deller@parisc-linux.org> Signed-off-by: Matthew Wilcox <willy@parisc-linux.org> Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>
* [PATCH] move capable() to capability.hRandy.Dunlap2006-01-112-1/+2
| | | | | | | | | | | | | - Move capable() from sched.h to capability.h; - Use <linux/capability.h> where capable() is used (in include/, block/, ipc/, kernel/, a few drivers/, mm/, security/, & sound/; many more drivers/ to go) Signed-off-by: Randy Dunlap <rdunlap@xenotime.net> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PARISC] Fix Dino reporting on J2240Matthew Wilcox2006-01-101-4/+4
| | | | | | | | Fix Dino reporting on J2240. This particular machine thought it had a Cujo. Also add J2240 Dino chip to the hp_hardware_list. Signed-off-by: Matthew Wilcox <willy@parisc-linux.org> Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>
* [PARISC] pdc_stable: More robust sysfs error checkingThibaut VARENE2006-01-101-11/+31
| | | | | | | | | | pdc_stable 0.10: As mentioned on LKML, pdc_stable wasn't checky enough on the return values of some calls. This patch makes it more robust to errors when registering objects in sysfs. Signed-off-by: Thibaut VARENE <varenet@parisc-linux.org> Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>
* [PARISC] Truncate overlapping PAT PDC reported rangesGrant Grundler2006-01-101-23/+90
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | Deal with overlapping LBA MMIO resources, rp3440 PDC BUG: PDC reports lmmio range for the last rope that overlaps with the CPU HPA. Console output was: ... Found devices: 1. Storm Peak Fast at 0xfffffffffe798000 [152] { 0, 0x0, 0x889, 0x00004 } 2. Storm Peak Fast at 0xfffffffffe799000 [153] { 0, 0x0, 0x889, 0x00004 } ... FAILED: lba_fixup_bus() request for lmmio_space [fffffffff0000000/fffffffffecffffe] Output is now: LBA: Truncating lmmio_space [fffffffff0000000/fffffffffecffffe] to [fffffffff0000000,fffffffffe797fff] My only concern with this patch is how C8000 (PAT PDC) will report elmmio ranges when a gfx card is installed. I'll have to test this another day. Signed-off-by: Grant Grundler <grundler@parisc-linux.org> Signed-off-by: James Bottomley <jejb@parisc-linux.org> Signed-off-by: Matthew Wilcox <willy@parisc-linux.org> Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>
* [PARISC] Introduce DINO_LOCAL_IRQS and use it for gsc_find_local_irqHelge Deller2006-01-101-3/+4
| | | | | | | | Fix dino by using DINO_LOCAL_IRQS as the limit for gsc_find_local_irq() instead of the irq itself. Signed-off-by: Helge Deller <deller@parisc-linux.org> Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>
* [PARISC] Add __user annotation to eisa_eeprom.cAlexey Dobriyan2006-01-101-1/+1
| | | | | | | | Annotate eisa_eeprom_read() with __user. Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: Matthew Wilcox <matthew@wil.cx> Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>
* [PARISC] Fix Cirrus 6832 Cardbus on RDI Tadpole PARISC LaptopHelge Deller2006-01-101-0/+15
| | | | | | | | | Fix irq-off-by-one for Cirrus 6832 Cardbus on RDI Tadpole PARISC Laptop. We just DECLARE_PCI_FIXUP_ENABLE as it is unlikely that this will be found in any other parisc system. Signed-off-by: Helge Deller <deller@parisc-linux.org> Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>
* [PARISC] Add __read_mostly section for pariscHelge Deller2006-01-106-20/+20
| | | | | | | | Flag a whole bunch of things as __read_mostly on parisc. Also flag a few branches as unlikely() and cleanup a bit of code. Signed-off-by: Helge Deller <deller@parisc-linux.org> Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>
* spelling: s/trough/through/Adrian Bunk2006-01-101-1/+1
| | | | | | Additionally, one comment was reformulated by Joe Perches <joe@perches.com>. Signed-off-by: Adrian Bunk <bunk@stusta.de>
* [PARISC] Make superio.c initialize before any driver needs itKyle McMartin2005-11-171-14/+21
| | | | | | | | | Convert superio_init to use PCI_FIXUP_FINAL as ohci_pci being called before superio_probe really makes a mess. superio_init will then fail to register irq 20 (the "SuperIO" irq) and BUG() because ohci_pci has stolen it before superio_fixup_irq can be moved USB to irq 1. Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>
* [PARISC] Add IRQ affinitiesJames Bottomley2005-11-171-1/+25
| | | | | | | | | | | | This really only adds them for the machines I can check SMP on, which is CPU interrupts and IOSAPIC (so not any of the GSC based machines). With this patch, irqbalanced can be used to maintain irq balancing. Unfortunately, irqbalanced is a bit x86 centric, so it doesn't do an incredibly good job, but it does work. Signed-off-by: James Bottomley <jejb@parisc-linux.org> Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>
* Auto-update from upstreamKyle McMartin2005-10-282-2/+2
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| * [PATCH] gfp_t: dma-mapping (parisc)Al Viro2005-10-282-2/+2
| | | | | | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | [PARISC] Avoid use of floating point in the kernelRandolph Chung2005-10-211-1/+1
| | | | | | | | | | | | | | | | don't use *printf %f in the kernel, mm'kay? Signed-off-by: Randolph Chung <tausq@parisc-linux.org> Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>
* | [PARISC] Initialize serial spinlocks in superio.cKyle McMartin2005-10-211-0/+3
| | | | | | | | | | | | | | git commit 976ecd12b8144d066a23fe97c6fbfc1ac8470af7 changed our locking characteristics, and put the onus of spin_lock_init on superio.c. Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>
* | [PARISC] Minor iosapic.c cleanupGrant Grundler2005-10-211-1/+1
| | | | | | | | | | | | | | | | | | minor cleanup: qualify constant with "UL" Acked-by: "Hmamouche, Youssef" <youssef@ece.utexas.edu> Signed-off-by: Grant Grundler <grundler@parisc-linux.org> Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>
* | [PARISC] Use work queue in LED/LCD driver instead of tasklet.Grant Grundler2005-10-211-113/+112
| | | | | | | | | | | | | | | | | | | | | | | | | | | | 2.6.12-rc1-pa6 use work queue in LED/LCD driver instead of tasklet. Main advantage is it allows use of msleep() in the led_LCD_driver to "atomically" perform two MMIO writes (CMD, then DATA). Lead to nice cleanup of the main led_work_func() and led_LCD_driver(). Kudos to David for being persistent. From: David Pye <dmp@davidmpye.dyndns.org> Signed-off-by: Grant Grundler <grundler@parisc-linux.org> Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>
* | [PARISC] Update dino from parisc treeMatthew Wilcox2005-10-211-10/+22
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Fix card-mode Dino crashes on 725 (and probably other Snake) systems. Dino was coming up in fatal mode after a warm reboot. Resetting Dino brings it out of fatal mode, so do that if the status register indicates we're in fatal mode. Since this was never observed on any later systems, I presume firmware does this for us on those. Signed-off-by: Matthew Wilcox <willy@parisc-linux.org> Add debug statements in the cfg_read and cfg_write functions Fix debug statements from the IRQ overhaul last winter Rename dino_driver_callback() to dino_probe() Signed-off-by: Matthew Wilcox <willy@parisc-linux.org> Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>
* | [PARISC] Update ccio-dma from parisc treeGrant Grundler2005-10-211-58/+78
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | revert use of %%sr0 in fdc asm. Thanks to Joel Soete for pointing out this oversight. Signed-off-by: Grant Grundler <grundler@parisc-linux.org> 2.6.14-rc2-pa3 fdc/lci should be %r0 instead 0 for index (PA 1.1 compliance) From: Joel Soete <soete.joel@tiscali.be> Signed-off-by: Grant Grundler <grundler@parisc-linux.org> Explain why we need insert_resource() instead of request_resource(). Fundementally, this is more convoluted for ccio driver because of o legacy (HP-PB) transperant bridges. o support for MMIO behind card-mode Dino (PCI) o support for above bridges without ccio in the box SBA driver doesn't have to worry about those issues. Signed-off-by: Grant Grundler <grundler@parisc-linux.org> Use insert_resource instead of request_resource now that the subdevices will already have their resources claimed Signed-off-by: Matthew Wilcox <willy@parisc-linux.org> re-enable use of "inline" for perf critical functions. Signed-off-by: Grant Grundler <grundler@parisc-linux.org> 2.6.12-rc4-pa5 fix sign extension of MMIO range Fixes the problem of claiming a range that is disabled on 64-bit kernel: ccio_init_resource() claimed CCIO bus address space (ffffffff00000000, ffffffffffffffff) also removes use of __FILE__. Tested on both 32 and 64-bit systems by Joel. From: Joel Soete <soete.joel@tiscali.be> Signed-off-by: Grant Grundler <grundler@parisc-linux.org> 2.6.12-rc1-pa7 incorrect BUG_ON in ccio ccio-dma.c line 1317 was preventing K-class with 4GB RAM from booting. Any ccio machine with >=2GB of RAM would have (incorrectly) triggered this. Signed-off-by: Grant Grundler <grundler@parisc-linux.org> Convert to ioremap and __raw_read/write Signed-off-by: Matthew Wilcox <willy@parisc-linux.org> Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>
* | [PARISC] Update sba_iommu from parisc treeGrant Grundler2005-10-211-49/+91
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | revert use of %%sr0 in fdc asm. Thanks to Joel Soete for pointing out this oversight. Signed-off-by: Grant Grundler <grundler@parisc-linux.org> 2.6.14-rc2-pa3 move "sync" outside the main loop that fills IO Pdir. Signed-off-by: Grant Grundler <grundler@parisc-linux.org> remove explicit use of sr0 in fdc ops. Thanks to Joel Soete for reminding me were I added those... Signed-off-by: Grant Grundler <grundler@parisc-linux.org> 2.6.14-rc2-pa2 - make SBA more anal about invalidating pdir entries Previous code cleared the valid flag a pdir entry but it did NOT guarantee this change was visible to the PDIR before writing the PCOM register. Ie the SBA could pick up a stale entry if the write happened to hit the SBA before the cacheline was flushed from the cache. Long term, I think I want to make this a compile time flag. Developement tree should enable anal pdir checking by default and Debian can disable it with either a CONFIG option or one-line patch. fdc/sync options can only negatively affect performance though I haven't measure how much yet. If someone can run netperf TCP_RR across gige and compare -pa1 and -pa2, that would be sufficient. Cleaned up the use of "fdc" to make sure it's using "kernel" space id (specify sr0 but maps to sr4-7). It seems a bit fragile to assume "sr1" gets loaded with KERNEL_SPACE which is how the code works today. Tested on 32 and 64-bit SMP kernels on j6k. Signed-off-by: Grant Grundler <grundler@parisc-linux.org> remove PDC_NARROW from SBA and document history of PDC_NARROW a bit. It will still show up in an older kernel's .config file. Signed-off-by: Grant Grundler <grundler@parisc-linux.org> if/ifdef cleanups from Joel Soete. Signed-off-by: Grant Grundler <grundler@parisc-linux.org> 2.6.12-rc4-pa2 fix 32-bit support for Astro platforms o Since my last SBA code change, SBA could allocate more than 1GB of IOVA space on Astro boxes with more than 1GB of RAM when running 32-bit kernel. This is bad since IOMMU can only talk to the first 1GB at most. Kudos to jejb for quickly spotting that bug. o jejb also noted SBA should *always* reject DMA masks > 32-bits since DMA-mapping.txt indicates caller should try again with 32-bits. o off-by-one error when comparing the mask to IOVA space size. Signed-off-by: Grant Grundler <grundler@parisc-linux.org> Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>
* | [PARISC] Convert parisc_device to use struct resource for hpaMatthew Wilcox2005-10-2110-25/+25
| | | | | | | | | | | | | | | | | | | | | | | | Convert pa_dev->hpa from an unsigned long to a struct resource. Signed-off-by: Matthew Wilcox <willy@parisc-linux.org> Fix up users of ->hpa to use ->hpa.start instead. Signed-off-by: Matthew Wilcox <willy@parisc-linux.org> Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>
* | [PARISC] Change the driver names so /sys/bus/parisc/drivers/ looks betterMatthew Wilcox2005-10-216-7/+7
| | | | | | | | | | | | | | | | | | Make /sys/bus/parisc/drivers look better by cleaning up parisc_driver names. Signed-off-by: Matthew Wilcox <willy@parisc-linux.org> Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>
* | [PARISC] Convert parisc_device tree to use struct device klistsMatthew Wilcox2005-10-212-5/+24
|/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Fix parse_tree_node. much more needs to be done to fix this file. Signed-off-by: Matthew Wilcox <willy@parisc-linux.org> Make drivers.c compile based on a patch from Pat Mochel. From: Patrick Mochel <mochel@digitalimplant.org> Signed-off-by: Kyle McMartin <kyle@parisc-linux.org> Fix drivers.c to create new device tree nodes when no match is found. Signed-off-by: Richard Hirst <rhirst@parisc-linux.org> Do a proper depth-first search returning parents before children, using the new klist infrastructure. Signed-off-by: Richard Hirst <rhirst@parisc-linux.org> Fixed parisc_device traversal so that pdc_stable works again Fixed check_dev so it doesn't dereference a parisc_device until it has verified the bus type Signed-off-by: Randolph Chung <tausq@parisc-linux.org> Convert pa_dev->hpa from an unsigned long to a struct resource. Use insert_resource() instead of request_mem_region(). Request resources at bus walk time instead of driver probe time. Don't release the resources as we don't have any hotplug parisc_device support yet. Add parisc_pathname() to conveniently get the textual representation of the hwpath used in sysfs. Inline the remnants of claim_device() into its caller. Signed-off-by: Matthew Wilcox <willy@parisc-linux.org> I noticed that some of the STI regions weren't showing up in iomem. Reading the STI spec indicated that all STI devices occupy at least 32MB. So check for STI HPAs and give them 32MB instead of 4kB. Signed-off-by: Matthew Wilcox <willy@parisc-linux.org> Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>
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