implementations or no implementation on all platforms.
Some of these functions might be good ideas, but their semantics were unclear
given the lack of implementation, and an unlucky porter could be fooled into
trying to implement them or, worse, being baffled when something like
platform_trap_enter() failed to be called.
a number of cores, this allows for a sparse set of CPUs. Implement support
for sparse core masks on Octeon.
XXX jeff@ suggests that all_cpus should include cores that are offline or
running other applications/OSes, so the platform API should be further
extended to allow us to set all_cpus to include all cores that are
physically-present as opposed to only those that are running FreeBSD.
Submitted by: Bhanu Prakash (with modifications)
Reviewed by: jchandra
Glanced at by: kib, jeff, jhb
In n32 and n64, add support for physical address above 4GB by having
64 bit page table entries and physical addresses. Major changes are:
- param.h: update PTE sizes, masks and shift values to support 64 bit PTEs.
- param.h: remove DELAY(), mips_btop(same as atop), mips_ptob (same as
ptoa), and reformat.
- param.h: remove casting to unsigned long in trunc_page and round_page
since this will be used on physical addresses.
- _types.h: have 64 bit __vm_paddr_t for n32.
- pte.h: update TLB LO0/1 access macros to support 64 bit PTE
- pte.h: assembly macros for PTE operations.
- proc.h: md_upte is now 64 bit for n32 and n64.
- exception.S and swtch.S: use the new PTE macros for PTE operations.
- cpufunc.h: TLB_LO0/1 registers are 64bit for n32 and n64.
- xlr_machdep.c: Add memory segments above 4GB to phys_avail[] as they are
supported now.
Reviewed by: jmallett (earlier version)
the ones which run the message ring handler.
Some bits of the interrupt mask are part of the status register which is
saved with the process context, and these bits are initialized from the
cpu on which the process is created. This means that all the processes
should have the same value for these interrupt mask bits, so that the
interrupt mask remains the same regardless of what thread is scheduled
on the cpu.
Submitted by: Sriram Gorti (srgorti at netlogicmicro dot com)
- Wakeup multiple threads per core using message ring watermark interrupts.
- Update message ring handler registration, use the real device station id
for registering interrupts.
- rge/nlge: update for the new message ring registration code.
- rge/nlge: use 2 message ring stations for incoming packets, this will
allow more messages to be queued.
- nlge: comment fixes, remove unused variable
- style and whitespace fixes
- Provide 64 bit implementations for some macros. On n64 and n32,
don't split 64 bit values.
- No need for 32 bit ops for control registers.
- Fix few bugs (write control reg, write_c0_register64).
- Re-write EIRR/EIMR/CPUID operations using read_c0_registerXX, no
need of inline assembly.
- rename control reg access functions to avoid phnx, update callers.
- stlye/whitespace fixes.
- set cache_coherent_dma flag in cpuinfo for XLR, this will make sure that
BUS_DMA_COHERENT flag is handled correctly in busdma_machdep.c
- iodi.c, call device_get_name() just once
- clear RMI specific EIRR while intializing CPUs
- remove debug print in intr_machdep.c
unused files.
- remove clock.c and clock.h, these are not used after the new timer
code was added.
- remove duplicated include files, fix header file ordering, remove
some unneeded includes.
- rename mips/rmi/shared_structs.h which contains the RMI boot loader
interface to mips/rmi/rmi_boot_info.h. Remove unused files
mips/rmi/shared_structs_func.h and sys/mips/rmi/shared_structs_offsets.h
- merge mips/rmi/xlrconfig.h and mips/rmi/rmi_mips_exts.h, and remove
duplicated functions.
- nlge - minor change to remove unneeded argument.
- Add FreeBSD svn keyword for headers
SMP.
We used to route all PIC based interrupts to cpu 0, and used the per-CPU
interrupt mask to enable/disable interrupts. But the interrupt threads can
run on any cpu on SMP, and the interrupt thread will re-enable the interrupts
on the CPU it runs on when it is done, and not on cpu0 where the PIC will
still send interrupts to.
The fix is move the disable/enable for PIC based interrupts to PIC, we will
ack on PIC only when the interrupt thread is done, and we do not use the
per-CPU interrupt mask.
The changes also introduce a way for subsystems to add a function that
will be called to clear the interrupt on the subsystem. Currently This is
used by the PCI/PCIe for doing additional work during the interrupt
handling.
- Use timer 7 in XLR PIC as a 32 counter
- provide pic_init_timer(), pic_set_timer(), pic_timer_count32() and
pic_timer_count() PIC timer operations.
- register this timer as platform_timecounter on rmi platform.
- style(9) fixes to mips/rmi platform files
- update pic.h to add pic_setup_intr() and use pic_setup_intr() for setting
up interrupts which are routed thru PIC.
- remove rmi_spin_mutex_safe and haslock, and make sure that the functions
are called only after mutexes are available.
- move PIC code to xlr_machdep.c
- move fast message ring code completely to on_chip.c
- move memory initialization to a new function xlr_mem_init()
- style fixes
booting again.
The code is a copy of the mips/mips/tick.c with minor modifications for
XLR interrupt handling. Disable mips/rmi/clock.c for now, the PIC based
timer code will be added later.
- Adds re-partitioning TLB per core for enabled threads.
- Adds hardware thread id to cpuid mapping
- updates rge driver packet distribution and message ring handling
threads to be started based on hardware thread id.
- remove unused early debugging code to set control registers.
- coding style fixes
Approved by: rrs (mentor)
am now able to run 32 cores ok.. but I still will hang
on buildworld with a NFS problem. I suspect I am missing
a patch for the netlogic rge driver.
JC check and see if I am missing anything except your
core-mask changes
Obtained from: JC
above 4Gig. If so when we add the base address with
the size we will wrap. So for now we just ignore
such memory and only use what we can. When we
get 64 bit working then we will be much better ;->
Basically the msg ring interrupt was being re-enabled
inside a spinlock as the thread set it self up for rescheduling.
This won't work since inside the re-enable is another
spin lock.. which means on return from the reenable
the interrupts have been reenabled. Thus you would
get a clock int and end up panicing holding a spin
lock to long :-o
the mi_startup (or to the last of it).. and
hit a panic after :
uart0: <16550 or compatible> on iodi0
Trap cause = 2 (TLB miss....)
I did have to take the pci bus OUT of the
build to get this far, hit a cache error with
the PCI code in. Interesting thing is the machine
reboots too ;-)
compile and many of them may disappear. For example
the xlr_boot1_console.c is old code that is ifdef'd out.
I will clean these sorts of things up as I make progress
on the port. So far the only thing I have I think straightened
out is the bits around the interupt handling... and hey that
may be broke ;-)
