using a lock and I'm not very much in favor of a global one.
* Added "finished" callback to IORequest.
* IOOperation::Finish() no longer invokes its parent request's
ChunkFinished(). The finisher does this instead. ChunkFinished()
can optionally remove the chunk from the parent.
* Added IORequest::Wait() which waits for the completion of the request.
* Introduced IORequestChunk::ResetStatus() to make setting the status to
"pending" somewhat more explicit.
* Implemented the missing IOScheduler::SetCallback() methods.
* The NotifyAll() calls on the IOScheduler's condition variables were
missing, so it just waited forever.
* Added some more debug output.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@26597 a95241bf-73f2-0310-859d-f6bbb57e9c96
thread. Interrupting a thread only works when it is already waiting.
We do now use a flag to indicate whether the scheduler thread is
waiting (avoids thread_interrupt() calls when the thread is in driver
code). Furthermore before starting to wait, we check whether any
finisher work has to be done -- we do that (and the addition of the
entry to the condition variable) with the finisher lock being held to
avoid the race condition.
* Moved waiting for and getting the next unscheduled request into new
method _GetNextUnscheduledRequest().
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@26594 a95241bf-73f2-0310-859d-f6bbb57e9c96
* As this was the last user of the READ_COUNT/WRITE_COUNT definitions in
vm_priv.h, I removed those as well.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@26582 a95241bf-73f2-0310-859d-f6bbb57e9c96
It does its job by using part of libsupc++, with fake malloc and friends to make sure it won't double fault.
Works here, but cp-demangle must be extracted by hand from the lib, can't get the rule to work as I want, Ingo ?
Maybe using it directly without malloc hack would be ok with 16KB buffer, but I'm not sure of that.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@26581 a95241bf-73f2-0310-859d-f6bbb57e9c96
fs_vnode_ops::write_pages() to be called with fsReenter = true. Since
this is no longer the case, the argument has become superfluous. For
read_pages() it always was. Removed the argument from the functions
and all functions that propagated it.
* Some whitespace at the end of lines was removed.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@26579 a95241bf-73f2-0310-859d-f6bbb57e9c96
introduces the following relevant changes:
* VMCache:
- Renamed vm_cache to VMCache, merged it with vm_store and made it a
C++ class with virtual methods (replacing the store operations).
Turned the different store implementations into subclasses.
- Introduced MergeStore() callback, changed semantics of Commit().
- Changed locking and referencing semantics. A reference can only be
acquired/released with the cache locked. An unreferenced cache is
deleted and a mergeable cache merged when it is unlocked. This
removes the "busy" state of a cache and simplifies the page fault
code.
* Added VMAnonymousCache, which will implement swap support (work by
Zhao Shuai). It is not integrated and used yet, though.
* Enabled the mutex/recursive lock holder asserts.
* Fixed DoublyLinkedList::Swap().
* Generalized the low memory handler to a low resource handler. And made
semaphores and reserved memory handled resources. Made
vm_try_resource_memory() optionally wait (with timeout), and used that
feature to reserve memory for areas.
...
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@26572 a95241bf-73f2-0310-859d-f6bbb57e9c96
did not set the "devicesOnly" flag to false when calling RegisterDevice().
* ddm_userland_interface.cpp incorrectly wrote to userland memory when it
assigned "neededSize" in several places.
* Replaced on-stack path with the UserStringParameter class where appropriate.
* Made the UserStringParameter class castable to char*.
* Minor cleanup in KDiskDeviceManager.cpp.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@26563 a95241bf-73f2-0310-859d-f6bbb57e9c96
This makes the kernel loadable by the bootloader, which does load it, and all the modules \o/
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@26558 a95241bf-73f2-0310-859d-f6bbb57e9c96
* Moved data buffer creation to a TestSuiteContext class.
* Added checks if the I/O operation does the correct thing, ie. reads/writes
the data to the right offset.
* Rearranged DMA translation: we now handle the partial write case correctly
(bounce buffer must always span over the whole block), and are able to join
adjacent bounce buffers together.
* The new _AddBounceBuffer() method also respects boundary and segment size
restrictions for bounce buffers.
* IOOperation now prepares the outgoing vecs/offset/length to contain the
right data for the current phase (partial read begin/end/do-all); it will
also make sure that the lengths of the vecs are of the same size than the
whole request.
* All tests are now passed, the I/O request implementation seems to be ready
for integration now.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@26556 a95241bf-73f2-0310-859d-f6bbb57e9c96
bootloader's smp init and into its own unit.
ACPI tables can now generally be found with acpi_find_table(signature).
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@26538 a95241bf-73f2-0310-859d-f6bbb57e9c96
- disable tracing mmu
- make scratch buffer 8k as it's declared as such... that makes things much better indeed :)
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@26537 a95241bf-73f2-0310-859d-f6bbb57e9c96
* Fixed build: round_up() has been renamed to key_align().
* Whitespace cleanup.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@26532 a95241bf-73f2-0310-859d-f6bbb57e9c96
- bitfield definitions of page dirs were reversed... 040 is still wrong though.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@26528 a95241bf-73f2-0310-859d-f6bbb57e9c96
- move part of mmu handling to mmu-dependant files and extend ops
- implemented 040 mmu init. doing so I spotted a bug in ARAnyM which ignored [ID]TT0. Linux likely doesn't use them but I was too lazy touse temporary page tables. I also noticed bitfields were in wrong order, to be fixed.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@26527 a95241bf-73f2-0310-859d-f6bbb57e9c96
* FileMap::_InvalidateAfter():
- Off-by-one error. The last extend (which normally should be kept)
was thrown away, too, but still accessed afterwards. Worst case
could be a write to free()d memory.
- Drop the last extend when it would be truncated to zero size.
* FileMap::Translate():
- Incorrect handling of B_BUFFER_OVERFLOW case in the
vfs_get_file_map() loop. After the loop the function would return
incorrectly, making the caller think all vectors in the provided
array had been initialized correctly. This could cause a file system
implementation using the file map to read from or write to random
disk locations, in the latter case possibly corrupting the file
system.
- Some readability improvements in the final loop. Removed incorrect
check.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@26523 a95241bf-73f2-0310-859d-f6bbb57e9c96
it can actually be used (that should have been part of an earlier commit,
but didn't break the build this time).
* dump_modules() must use kprintf() instead of dprintf().
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@26522 a95241bf-73f2-0310-859d-f6bbb57e9c96
More work on the I/O scheduler, more precisely mainly the DMAResource class:
* When splitting requests into operations, we're now able to flexibly mix
bounce buffer segments and the given physical vectors in a single
operation. This reduces the number of operations.
* Squashed several TODO and fleshed out more of the implementation.
* Added a test driver running unit tests. There are only a few tests yet,
but those pass.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@26519 a95241bf-73f2-0310-859d-f6bbb57e9c96
though until we use ACPI for proper PCI IRQ routing through the IO APIC.
Therefore the IO APIC code path is not yet enabled and the IO APIC isn't used.
ISA interrupts would work though, as would PCI interrupts if you'd hardcode
them for your specific configuration.
Note that this change also modifies some parts in the bootloader and in the PIC
setup to make local APICs available even on non-SMP systems. This causes APIC
timers to be used instead the normal PIT if it is available (also on non-SMP
configurations).
Also fixes some general errors in SMP and PIC code as well as some code cleanup.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@26492 a95241bf-73f2-0310-859d-f6bbb57e9c96
* If init_driver() fails, the device manager now prints a message to syslog.
* device_node::CompareTo() was broken: it never correctly compared the last
attribute. This could cause duplicate nodes.
* Removed superfluous white space.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@26489 a95241bf-73f2-0310-859d-f6bbb57e9c96
* Moved the old I/O scheduler code into the device manager, and replaced its
contents completely :-)
* Implemented the DMA and I/O requests/scheduler framework - for now in C++
only. It's a work in progress and not used anywhere yet.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@26488 a95241bf-73f2-0310-859d-f6bbb57e9c96
- calculate ram ranges, 1 for st ram, one for fast ram if available. The kernel won't differentiate yet though, we'll have problems with DMA later on...
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@26480 a95241bf-73f2-0310-859d-f6bbb57e9c96
- shuffle memory map
- set up transparent translations: first 32MB of RAM and last 16MB for IO space.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@26478 a95241bf-73f2-0310-859d-f6bbb57e9c96
Fix kernel printing of unsigned 64bit datatypes with the highest bit set. They
would previously be converted to a signed type and were then handled wrongly.
Use the sign flag to properly decide when to use casting to a singed type.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@26473 a95241bf-73f2-0310-859d-f6bbb57e9c96
using it.
* IOW cache_prefetch_vnode() should work again now.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@26468 a95241bf-73f2-0310-859d-f6bbb57e9c96
