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* sh: Fixup movli.l/movco.l atomic ops for gcc4.Paul Mundt2006-12-05
| | | | | | | | | | | | | | | gcc4 gets a bit pissy about the outputs: include/asm/atomic.h: In function 'atomic_add': include/asm/atomic.h:37: error: invalid lvalue in asm statement include/asm/atomic.h:30: error: invalid lvalue in asm output 1 ... this ended up being a thinko anyways, so just fix it up. Verified for proper behaviour with the older toolchains, too. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* sh: dyntick infrastructure.Paul Mundt2006-12-05
| | | | | | | | This adds basic NO_IDLE_HZ support to the SH timer API so timers are able to wire it up. Taken from the ARM version, as it fit in to our API with very few changes needed. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* sh: Clock framework tidying.Paul Mundt2006-12-05
| | | | | | | | This syncs up the SH clock framework with the linux/clk.h API, for which there were only some minor changes required, namely the clk_get() dev_id and subsequent callsites. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* sh: Turn off IRQs around get_timer_offset() calls.Paul Mundt2006-12-05
| | | | | | | | | Since all of the sys_timer sources currently do this on their own within the ->get_offset() path, it's more sensible to just have the caller take care of it when grabbing xtime_lock. Incidentally, this is more in line with what others (ie, ARM) are doing already. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* sh: Get the PGD right in oops case with 64-bit PTEs.Paul Mundt2006-12-05
| | | | | | | | | | | | Previously this was using a static pgd shift in the reporting code, simply flip this to PGDIR_SHIFT which does the right thing depending on varying PTE magnitudes on the SH-X2 MMU. While we're at it, and since it's been recently added, use get_TTB() for fetching the TTB, rather than the open coded instructions. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* sh: Fix store queue bitmap end.Paul Mundt2006-12-05
| | | | | | | | | | | | | The end of the store queue bitmap is miscalculated when searching for a free range in sq_remap(), missing the PAGE_SHIFT shift that's done in sq_api_init(). This runs in to workloads where we can scan beyond the end of the bitmap. Spotted by Paul Jackson: http://marc.theaimsgroup.com/?l=linux-kernel&m=116493191224097&w Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* sh: More flexible + SH7780 earlyprintk SCIF support.Paul Mundt2006-12-05
| | | | | | | | | | | This makes the early printk support somewhat more flexible, moving the port definition to a config option, and making the port initialization configurable for sh-ipl+g users. At the same time, this allows us to trivially wire up the SH7780 SCIF0, so that's thrown in too more or less for free. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* sh: Fixup various PAGE_SIZE == 4096 assumptions.Paul Mundt2006-12-05
| | | | | | | | | | | | | | | | | | | | | | There were a number of places that made evil PAGE_SIZE == 4k assumptions that ended up breaking when trying to play with 8k and 64k page sizes, this fixes those up. The most significant change is the way we load THREAD_SIZE, previously this was done via: mov #(THREAD_SIZE >> 8), reg shll8 reg to avoid a memory access and allow the immediate load. With a 64k PAGE_SIZE, we're out of range for the immediate load size without resorting to special instructions available in later ISAs (movi20s and so on). The "workaround" for this is to bump up the shift to 10 and insert a shll2, which gives a bit more flexibility while still being much cheaper than a memory access. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* sh: Fixup 4K irq stacks.Paul Mundt2006-12-05
| | | | | | | | | | | There was a clobber issue with the register we were saving the stack in, so we switch to a register that we handle in the clobber list properly already. This also follows the x86 changes for allowing the softirq checks from hardirq context. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* sh: dma-api channel capability extensions.Mark Glaisher2006-12-05
| | | | | | | | | | | | | This extends the SH DMA API for allowing handling of DMA channels based off of their respective capabilities. A couple of functions are added to the existing API, the core bits are register_chan_caps() for registering channel capabilities, and request_dma_bycap() for fetching a channel dynamically based off of a capability set. Signed-off-by: Mark Glaisher <mark.glaisher@st.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* sh: Drop name overload in dma-sh.Paul Mundt2006-12-05
| | | | | | | | | | | Pass along the dev_id from request_dma() all the way down, rather than inserting an artificial name relating to the TEI line that we were doing before. This makes the line a bit less obvious, but dev_id is the proper behaviour for this regardless. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* sh: Make dma-isa depend on ISA_DMA_API.Paul Mundt2006-12-05
| | | | | | | | Previously we linked in the ISA DMA wrapper unconditionally. As there are very few users of this, it's better to make it conditional. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* sh: dma-sysfs fixes.Paul Mundt2006-12-05
| | | | | | | | Handle the case where no registered DMACs exist somewhat more gracefully. While we're at it, check for sysdev_create_file() failing. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* sh: Fix syscall tracing ordering.Stuart Menefy2006-12-05
| | | | | | | | | | | | | | | | | | | | | The implementation of system call tracing in the kernel has a couple of ordering problems: - the validity of the system call number is checked before calling out to system call tracing code, and should be done after - the system call number used when tracing is the one the system call was invoked with, while the system call tracing code can legitimatly change the call number (for example strace permutes fork into clone) This patch fixes both of these problems, and also reoders the code slightly to make the direct path through the code the common case. Signed-off-by: Stuart Menefy <stuart.menefy@st.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* sh: KSTK_EIP/KSTK_ESP consistency.Stuart Menefy2006-12-05
| | | | | | | | | | | | | | | | | | | | | Two of the fields in /proc/[number]/stat are documented in proc(5) as: kstkesp %lu The current value of esp (stack pointer), as found in the kernel stack page for the process. kstkeip %lu The current EIP (instruction pointer). The SH currently prints the the last SP and PC of the process inside the kernel, while most other archs use the last user space values. This patch modifes the SH to display the user space values. Signed-off-by: Stuart Menefy <stuart.menefy@st.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* sh: TLB miss fast-path optimizations.Stuart Menefy2006-12-05
| | | | | | | | Handle simple TLB miss faults which can be resolved completely from the page table in assembler. Signed-off-by: Stuart Menefy <stuart.menefy@st.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* sh: R7780RP push-switch support.Paul Mundt2006-12-05
| | | | | | | This adds simple push-switch support for the RDBRP-1/RDBREVRP-1 debug boards found on the R7780RP-1. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* sh: generic push-switch framework.Paul Mundt2006-12-05
| | | | | | | | | | This adds support for a generic push switch framework. Adaptable for various switches, including GPIO switches and the push switches commonly found on Renesas debug boards. This allows switch states to be trivially reported through sysfs. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* sh: pmd rework.Stuart Menefy2006-12-05
| | | | | | | | | Remove extra bits from the pmd structure and store a kernel logical address rather than a physical address. This allows it to be directly dereferenced. Another piece of wierdness inherited from x86. Signed-off-by: Stuart Menefy <stuart.menefy@st.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* sh: Use MMU.TTB register as pointer to current pgd.Stuart Menefy2006-12-05
| | | | | | | | | Add TTB accessor functions and give it a sensible default value. We will use this later for optimizing the fault path. Signed-off-by: Stuart Menefy <stuart.menefy@st.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* sh: Set up correct siginfo structures for page faults.Stuart Menefy2006-12-05
| | | | | | | | Remove the previous saving of fault codes into the thread_struct as they are never used, and appeared to be inherited from x86. Signed-off-by: Stuart Menefy <stuart.menefy@st.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* sh: gcc4 support.Stuart Menefy2006-12-05
| | | | | | | | | | | | This fixes up the kernel for gcc4. The existing exception handlers needed some wrapping for pt_regs access, acessing the registers via a RELOC_HIDE() pointer. The strcpy() issues popped up here too, so add -ffreestanding and kill off the symbol export. Signed-off-by: Stuart Menefy <stuart.menefy@st.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* sh: Explicit endian selection support.Paul Mundt2006-12-05
| | | | | | | | | | | | Previously big endian was simply assumed if little endian was not set, which led to some cflags ordering issues. There's not much point to not having a big endian option, so shove one in a choice and wire it up in the Makefile. This lets us clean up some of the cflags ordering while we're at it. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* sh: p3map_sem sem2mutex conversion.Paul Mundt2006-12-05
| | | | | | Simple sem2mutex conversion for the p3map semaphores. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* sh: Preliminary support for SH-X2 MMU.Paul Mundt2006-12-05
| | | | | | | | | | | | | | | | | | | This adds some preliminary support for the SH-X2 MMU, used by newer SH-4A parts (particularly SH7785). This MMU implements a 'compat' mode with SH-X MMUs and an 'extended' mode for SH-X2 extended features. Extended features include additional page sizes (8kB, 4MB, 64MB), as well as the addition of page execute permissions. The extended mode attributes are placed in a second data array, which requires us to switch to 64-bit PTEs when in X2 mode. With the addition of the exec perms, we also overhaul the mmap prots somewhat, now that it's possible to handle them more intelligently. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* sh: Hook SH7785 in to the build system.Paul Mundt2006-12-05
| | | | | | Simple 7785 placeholders to start hooking up other bits of code. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* sh: Drop CPU subtype IRQ headers.Paul Mundt2006-12-05
| | | | | | | | | | | | | This drops the various IRQ headers that were floating around and primarily providing hardcoded IRQ definitions for the various CPU subtypes. This quickly got to be an unmaintainable mess, made even more evident by the subtle breakage introduced by the SH-2 and SH-2A changes. Now that subtypes are able to register IRQ maps directly, just rip all of the headers out. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* sh: Configurable timer IRQ.Paul Mundt2006-12-05
| | | | | | | | | All of the various CPU subtypes currently hardcode TIMER_IRQ, switch this to a config option in the few places we need this. This allows further removal of hardcoded IRQ headers.. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* sh: Fixup entry-common path breakage for SH-3.Paul Mundt2006-12-05
| | | | | | | The nommu patches broke the path for the common bits, get it building for the SH-3/4 case again. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* sh: SE7206 build fixes.Paul Mundt2006-12-05
| | | | | | | A number of API changes happened underneath the 7206 patches, update for everything that broke. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* sh: Add support for Solution Engine 7206 and 7619 boards.Yoshinori Sato2006-12-05
| | | | | | | This adds support for the Solution Engine 7206 and 7619. Signed-off-by: Yoshinori Sato <ysato@users.sourceforge.jp> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* sh: Add SH-2A platform headers.Yoshinori Sato2006-12-05
| | | | | | | Mostly SH-2 wrappers.. Signed-off-by: Yoshinori Sato <ysato@users.sourceforge.jp> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* sh: Exception vector rework and SH-2/SH-2A support.Yoshinori Sato2006-12-05
| | | | | | | | | This splits out common bits from the existing exception handler for use between SH-2/SH-2A and SH-3/4, and adds support for the SH-2/2A exceptions. Signed-off-by: Yoshinori Sato <ysato@users.sourceforge.jp> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* sh: Wire up division and address error exceptions on SH-2A.Yoshinori Sato2006-12-05
| | | | | | | | SH-2A has special division hardware as opposed to a full-fledged FPU, wire up the exception handlers for this. Signed-off-by: Yoshinori Sato <ysato@users.sourceforge.jp> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* sh: Add support for SH7206 and SH7619 CPU subtypes.Yoshinori Sato2006-12-05
| | | | | | | | This implements initial support for the SH7206 (SH-2A) and SH7619 (SH-2) MMU-less CPUs. Signed-off-by: Yoshinori Sato <ysato@users.sourceforge.jp> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* [PATCH] Centralise definitions of sector_t and blkcnt_tMatthew Wilcox2006-12-04
| | | | | | | | | | | | | | | | CONFIG_LBD and CONFIG_LSF are spread into asm/types.h for no particularly good reason. Centralising the definition in linux/types.h means that arch maintainers don't need to bother adding it, as well as fixing the problem with x86-64 users being asked to make a decision that has absolutely no effect. The H8/300 porters seem particularly confused since I'm not aware of any microcontrollers that need to support 2TB filesystems. Signed-off-by: Matthew Wilcox <matthew@wil.cx> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* Merge branch 'for-linus' of git://brick.kernel.dk/data/git/linux-2.6-blockLinus Torvalds2006-12-04
|\ | | | | | | | | | | * 'for-linus' of git://brick.kernel.dk/data/git/linux-2.6-block: [PATCH] blktrace: don't return blktrace_seq from trace_note() [PATCH] blktrace: uninline trace_note()
| * [PATCH] blktrace: don't return blktrace_seq from trace_note()Jens Axboe2006-12-04
| | | | | | | | | | | | Only the process notifier needs it, and it can set it manually. Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
| * [PATCH] blktrace: uninline trace_note()Jens Axboe2006-12-04
| | | | | | | | | | | | | | It's too large to inline. Additionally clean it up, by fast pathing the likely path. Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
* | Merge branch 'upstream-linus' of ↵Linus Torvalds2006-12-04
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/mfasheh/ocfs2 * 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mfasheh/ocfs2: (31 commits) ocfs2: implement i_op->permission configfs: make configfs_dirent_exists() static ocfs2: update file system paths to set atime ocfs2: core atime update functions ocfs2: Add splice support ocfs2: Remove ocfs2_write_should_remove_suid() [PATCH] Export should_remove_suid() configfs: mutex_lock_nested() fix ocfs2: Remove struct ocfs2_journal_handle in favor of handle_t ocfs2: remove handle argument to ocfs2_start_trans() ocfs2: remove ocfs2_journal_handle journal field ocfs2: pass ocfs2_super * into ocfs2_commit_trans() ocfs2: remove unused handle argument from ocfs2_meta_lock_full() ocfs2: make ocfs2_alloc_handle() static ocfs2: remove unused ocfs2_handle_add_lock() ocfs2: remove unused ocfs2_handle_add_inode() ocfs2: Don't allocate handle early in ocfs2_rename() ocfs2: don't use handle for locking in allocation functions ocfs2: don't pass handle to ocfs2_meta_lock in ocfs2_rename() ocfs2: don't pass handle to ocfs2_meta_lock in ocfs2_symlink() ...
| * | ocfs2: implement i_op->permissionTiger Yang2006-12-01
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Implement .permission() in ocfs2_file_iops, ocfs2_special_file_iops and ocfs2_dir_iops. This helps us avoid some multi-node races with mode change and vfs operations. Signed-off-by: Tiger Yang <tiger.yang@oracle.com> Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
| * | configfs: make configfs_dirent_exists() staticAdrian Bunk2006-12-01
| | | | | | | | | | | | | | | | | | | | | | | | This patch makes the needlessly global configfs_dirent_exists() static. Signed-off-by: Adrian Bunk <bunk@stusta.de> Signed-off-by: Joel Becker <joel.becker@oracle.com> Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
| * | ocfs2: update file system paths to set atimeTiger Yang2006-12-01
| | | | | | | | | | | | | | | | | | | | | | | | Conditionally update atime in ocfs2_file_aio_read(), ocfs2_readdir() and ocfs2_mmap(). Signed-off-by: Tiger Yang <tiger.yang@oracle.com> Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
| * | ocfs2: core atime update functionsTiger Yang2006-12-01
| | | | | | | | | | | | | | | | | | | | | This patch adds the core routines for updating atime in ocfs2. Signed-off-by: Tiger Yang <tiger.yang@oracle.com> Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
| * | ocfs2: Add splice supportTiger Yang2006-12-01
| | | | | | | | | | | | | | | | | | | | | | | | | | | Add splice read/write support in ocfs2. ocfs2_file_splice_read/write are very similar to ocfs2_file_aio_read/write. Signed-off-by: Tiger Yang <tiger.yang@oracle.com> Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
| * | ocfs2: Remove ocfs2_write_should_remove_suid()Mark Fasheh2006-12-01
| | | | | | | | | | | | | | | | | | Use should_remove_suid() instead. Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
| * | [PATCH] Export should_remove_suid()Mark Fasheh2006-12-01
| | | | | | | | | | | | | | | | | | This helps us avoid replicating the same logic within file system drivers. Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
| * | configfs: mutex_lock_nested() fixMark Fasheh2006-12-01
| | | | | | | | | | | | | | | | | | | | | configfs_unregister_subsystem() nests a pair of inode i_mutex acquisitions, and thus needs annotation via mutex_lock_nested(). Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
| * | ocfs2: Remove struct ocfs2_journal_handle in favor of handle_tMark Fasheh2006-12-01
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This is mostly a search and replace as ocfs2_journal_handle is now no more than a container for a handle_t pointer. ocfs2_commit_trans() becomes very straight forward, and we remove some out of date comments / code. Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
| * | ocfs2: remove handle argument to ocfs2_start_trans()Mark Fasheh2006-12-01
| | | | | | | | | | | | | | | | | | | | | | | | | | | All callers either pass in NULL directly, or a local variable that is already set to NULL. The internals of ocfs2_start_trans() get a nice cleanup as a result. Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
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