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Rev Age Author Path Log message Diff
3779 5633 d 20 h jermar /trunk/kernel/ Only one kernel EGA driver to rule them all.  
3740 5643 d 17 h jermar /trunk/kernel/arch/sparc64/ Fix typo.  
3736 5644 d 20 h decky /trunk/kernel/arch/sparc64/ refresh kernel console during grab on sparc64  
3722 5649 d 0 h rimsky /trunk/kernel/arch/sparc64/include/ SMC functions optimized for US3.  
3672 5663 d 14 h jermar /trunk/ Merge sparc branch to trunk.  
3655 5669 d 14 h jermar /trunk/kernel/ Add additional members to the irq_t structure so that an interrupt-driven driver
does not need to know how to clear the level interrupt. The z8530 was modified
in this way and is much more generic. The ns16550 driver has also been modified,
but awaits testing. The sparc64 interrupt mapping and dispatch code is now using
the new info and calls the clear-interrupt-routine itself.
 
3654 5669 d 16 h jermar /trunk/kernel/arch/sparc64/ After my effort yesterday, there are two rival psycho drivers.
Merge the two and remove the newer one.
 
3647 5670 d 13 h jermar /trunk/kernel/arch/sparc64/ Improvized Psycho driver.  
3580 5687 d 12 h jermar /trunk/kernel/arch/sparc64/include/ Accesses to memory mapped registers should use volatile pointers so that
the compiler doesn't even think of trying to be clever. Add memory barriers
and fixed cstyle.
 
3577 5688 d 2 h vana /trunk/kernel/ Support for serial port console on IA64 as a compensation for keyboard - based on SPARC ns16550 driver  
3482 5727 d 14 h jermar /trunk/kernel/arch/sparc64/ Do not allocate full page for the uspace window buffer.
Instead, allocate only the bare minimum to fit NWINDOWS - 1
uspace windows and to satisfy alignment requirements.
 
3463 5739 d 19 h jermar /trunk/kernel/arch/sparc64/ Populate all sparc64 trap table slots belonging to trap_instruction_n.  
3379 5760 d 1 h jermar /trunk/kernel/arch/sparc64/include/ Add the missing preemption_disable() call to sparc64 atomic_lock_arch().
Thanks to Pavel Rimsky for noticing this.
 
3233 5794 d 19 h decky /trunk/ remove dummy page coloring facility, which is currenty not used  
3145 5837 d 2 h jermar /trunk/kernel/arch/sparc64/include/ On sparc64, when the operand to the FLUSH instruction doesn't matter, the
instruction's semantics is to flush the pipeline.
 
3134 5837 d 23 h jermar /trunk/kernel/arch/ Add smc_coherence_block().  
3133 5838 d 13 h jermar /trunk/kernel/arch/ Add smc_coherence() macro to all architectures.
So far, only amd64, ia32, ia64 and sparc64 are implemented.
 
3104 5846 d 2 h svoboda /trunk/kernel/ Declare arguments for memstr.h operations as pointers instead of uintptr_t.  
3071 5848 d 19 h decky /trunk/kernel/ reflect changes in generic code
proper formatting directives
coding style
 
3070 5848 d 19 h decky /trunk/kernel/arch/ introduce portable formatting directives
remove common types
 
2860 5897 d 14 h cejka /trunk/ Context handling unified for sparc64.  
2797 5909 d 14 h jermar /trunk/kernel/ Each architecture should only announce its endianity.
The conversion macros should be defined only once.
 
2794 5910 d 14 h jermar /trunk/kernel/ Add macros for byte swapping of uint16_t's.  
2725 5966 d 20 h decky /trunk/kernel/ remove config.memory_size, get_memory_size() and memory_init.{c|d}
the amount of available memory can be calculated from the sizes of the zones
add FRAMES2SIZE, SIZE2KB and SIZE2MB functions/macros (code readability)
 
2721 5967 d 20 h decky /trunk/kernel/ convert e820list to a generic physmem command  
2610 6048 d 18 h jermar /trunk/ Support for six syscall arguments for sparc64.
There is a minor stability issue which needs to be fixed (kernel panics upon entering kconsole from the
console task).
 
2510 6120 d 14 h jermar /trunk/kernel/ Experimental support for the cgsix framebuffer, which is found on old Ultra 1
worksations, and the SBUS bus and devices. Not tested.
 
2272 6259 d 16 h jermar /trunk/kernel/ Indentation and formatting fixes.  
2231 6269 d 18 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.
 
2216 6271 d 14 h decky /trunk/ make thread ID 64 bit (task ID is 64 bit already)
cleanup thread syscalls
 
2143 6281 d 18 h jermar /trunk/kernel/arch/sparc64/include/ Remove unneeded enum member.  
2141 6282 d 10 h jermar /trunk/ The Ultimate Solution To Illegal Virtual Aliases.
It is better to avoid them completely than to fight them.
Switch the sparc64 port to 16K pages. The TLBs and TSBs
continue to operate with 8K pages only. Page tables and
other generic parts operate with 16K pages.

Because the MMU doesn't support 16K directly, each 16K
page is emulated by a pair of 8K pages. With 16K pages,
illegal aliases cannot be created in 16K D-cache.
 
2134 6283 d 14 h jermar /trunk/kernel/ Reworked handling of illegal virtual aliases caused by frame reuse.
We moved the incomplete handling from backend's frame method to
backend's page_fault method. The page_fault method is the one that
can create an illegal alias if it writes the userspace frame using
kernel address with a different page color than the page to which is
this frame mapped in userspace. When we detect this, we do D-cache
shootdown on all processors (!!!).

If we add code that accesses userspace memory from kernel address
space, we will have to check for illegal virtual aliases at all such
places.

I tested this on a 4-way simulated E6500 and a real-world Ultra 5,
which has unfortunatelly only one processor.

This solves ticket #26.
 
2129 6318 d 13 h jermar /trunk/ Fix small problem in sparc64 port.

Bump version to 0.2.0.4 (Sunset).
 
2106 6334 d 21 h jermar /trunk/kernel/ Merge as_t structure into one and leave the differring parts in as_genarch_t.

Indentation and formatting changes in header files.
 
2105 6338 d 21 h decky /trunk/kernel/ move ipc structures to ipc.h  
2089 6340 d 21 h decky /trunk/ huge type system cleanup
remove cyclical type dependencies across multiple header files
many minor coding style fixes
 
2083 6346 d 20 h decky /trunk/kernel/ typedef elimination  
2082 6346 d 21 h decky /trunk/ __asm__ __volatile__ -> asm volatile  
2079 6347 d 15 h decky /trunk/kernel/ remove some typedefs in favor of anonymous structures