| Rev |
Age |
Author |
Path |
Log message |
Diff |
| 4537 |
5672 d 6 h |
trochtova |
/branches/dd/ |
dd branch synchronized with trunk (revision 4536) |
|
| 4055 |
5771 d 3 h |
trochtova |
/branches/dd/ |
changes in trunk (rev 4054) merged into dd branch |
|
| 3022 |
6054 d 5 h |
decky |
/branches/dd/ |
device drivers branch |
|
| 2231 |
6470 d 0 h |
jermar |
/trunk/kernel/arch/sparc64/ |
Fix a nasty bug in the TLB miss handlers on sparc64.
After we no longer lock the kernel stack in the DTLB,
there is a real danger of nested DTLB misses. The nested
miss can very easily clobber the DTLB Tag Access register.
Therefore, the original miss may not read this register, but
it has to receive its value as an argument. The argument
value is saved in the trap table when it is guaranteed that
the nested TLB miss will not occur. |
|
| 2089 |
6541 d 2 h |
decky |
/trunk/ |
huge type system cleanup
remove cyclical type dependencies across multiple header files
many minor coding style fixes |
|
| 2071 |
6551 d 19 h |
jermar |
/trunk/ |
(c) versus (C) |
|
| 2054 |
6579 d 18 h |
jermar |
/trunk/kernel/ |
Fix important comment in kernel/arch/sparc64/src/proc/scheduler.c.
Improve framebuffer code.
Formatting and indentation fixes. |
|
| 1946 |
6641 d 17 h |
jermar |
/trunk/kernel/arch/sparc64/ |
sparc64 work.
- Improve panic screen on data_access_exception
by dumping contents of DSFSR and DSFAR.
- Change the FHC enable interrupt code to only
set the IMAP_V bit. |
|
| 1864 |
6687 d 16 h |
jermar |
/trunk/ |
sparc64 update.
- Prototype userspace layer implementation that
at least relates to sparc64 and compiles cleanly.
- Fixes for kernel's preemptible_handler and code
related to running userspace.
- Enable userspace. Several dozen instructions
are now run in userspace! We are pretty near
the userspace milestone for sparc64. |
|
| 1860 |
6690 d 21 h |
jermar |
/trunk/kernel/ |
A lot of untested sparc64 stuff:
- Write ASID to hardware when a thread is about to run in userspace.
- Add userspace() and switch_to_userspace() functions.
- Handle special cases when the userspace spill/fill handler causes MMU trap.
- Resolve some TODOs in the existing sparc64 code.
- sparc64 has now C99 compliant header guards.
- Formatting and indentation fixes. |
|
| 1851 |
6701 d 2 h |
jermar |
/trunk/kernel/ |
sparc64 work.
Define the istate structure.
Move the identity-mapping handler to assembly.
Make the preemptible handler more general so that TL=1 MMU exceptions can make use of it.
Little bit of formatting and indentation. |
|
| 1823 |
6721 d 0 h |
jermar |
/trunk/kernel/arch/sparc64/ |
sparc64 work.
Dump take_over_tlb_and_tt() and add its assembly language replacement. |
|
| 1822 |
6721 d 4 h |
jermar |
/trunk/ |
sparc64 work.
1. Formatting fixes.
2. When writing to DMMU ASI's, simple membar() can be used in place of flush().
3. Substantial changes in the way the TLB is taken over.
4. Remove unneeded functions.
This is the first revision that also runs on a real world Ultra 5 with UltraSPARC IIi
processor.
Note that 3. needs further work as the current implementation depends on the fact
that the compiler will use registers for local variables in take_over_tlb_and_tt().
Rewrite of that function into assembly is to follow. |
|
| 1787 |
6741 d 21 h |
decky |
/ |
move kernel/trunk, uspace/trunk and boot/trunk to trunk/kernel, trunk/uspace and trunk/boot |
|
| 1780 |
6748 d 23 h |
jermar |
/kernel/trunk/ |
Replace old __u?? types with respective C99 variants (e.g. uint32_t, int64_t, uintptr_t etc.). |
|
| 1702 |
6770 d 1 h |
cejka |
/kernel/trunk/ |
Kernel doxygen comments updated. |
|
| 901 |
6874 d 5 h |
jermar |
/kernel/trunk/arch/ |
ia64 work.
Provide PA2KA(identity) mapping for kernel data references via Alternate Data TLB Fault handler.
Add before_thread_runs_arch() that maps kstack, if necessary.
Add easy to use dtlb_mapping_insert() for comfortable insertion of kernel data mappings. |
|
| 897 |
6875 d 16 h |
jermar |
/kernel/trunk/ |
sparc64 work.
Fix KBD_VIRT_ADDRESS.
Call before_thread_runs() prior to the switch to the thread's stack. Add comment why this is crucial.
Add after_thread_ran() to the scheduler.
Add before_thread_runs_arch() and after_thread_ran_arch() for sparc64, mapping/demapping thread's kernel stack.
Add dummy after_thread_ran_arch() to all other architectures.
Add dtlb_insert_mapping() to promote code reuse. |
|
| 877 |
6878 d 20 h |
jermar |
/kernel/trunk/arch/sparc64/ |
Fixes in sparc64 preliminary TLB miss handler.
Compute and insert identity mapping for kernel on the fly. |
|
| 873 |
6879 d 4 h |
jermar |
/kernel/trunk/arch/sparc64/ |
sparc64 work.
Add more MMU helper functions and make data TLB miss handler more verbose. |
|