05 Dec, 2011
1 commit
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There was a mixup when the SGI UV2 hub chip was sent to be
fabricated, and it ended up with the wrong part number in the
HRP_NODE_ID mmr. Future versions of the chip will (may) have the
correct part number. Change the UV infrastructure to recognize
both part numbers as valid IDs of a UV2 hub chip.Signed-off-by: Jack Steiner
Link: http://lkml.kernel.org/r/20111129210058.GA20452@sgi.com
Signed-off-by: Ingo Molnar
28 Oct, 2011
1 commit
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* 'x86-uv-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86: uv2: Workaround for UV2 Hub bug (system global address format)
21 Sep, 2011
1 commit
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This is a workaround for a UV2 hub bug that affects the format of system
global addresses.The GRU API for UV2 was inadvertently broken by a hardware change. The
format of the physical address used for TLB dropins and for addresses used
with instructions running in unmapped mode has changed. This change was
not documented and became apparent only when diags failed running on
system simulators.For UV1, TLB and GRU instruction physical addresses are identical to
socket physical addresses (although high NASID bits must be OR'ed into the
address).For UV2, socket physical addresses need to be converted. The NODE portion
of the physical address needs to be shifted so that the low bit is in bit
39 or bit 40, depending on an MMR value.It is not yet clear if this bug will be fixed in a silicon respin. If it
is fixed, the hub revision will be incremented & the workaround disabled.Signed-off-by: Jack Steiner
Cc: Ingo Molnar
Cc: "H. Peter Anvin"
Cc:
Signed-off-by: Andrew Morton
Signed-off-by: Thomas Gleixner
30 Aug, 2011
1 commit
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This covers the trivial cases from open-coded xadd to the xadd macros.
Signed-off-by: Jeremy Fitzhardinge
Link: http://lkml.kernel.org/r/4E5BCC40.3030501@goop.org
Signed-off-by: H. Peter Anvin
21 Jun, 2011
4 commits
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Correct the UV2 broacast assist unit's destination timeout
period. And the activation status register in UV2 should be
tested for a destination timeout with a 4, not a 2. The values
for Active versus Timeout were reversed.This patch is critical for TLB shootdown on an Altix UV2 system
(i.e. the follow-on to the current Altix UV).Destination timeout period:
The period is set in 4 bits of memory-mapped register MISC_CONTROL.
The left bit toggles base period between 10us and 80us.
The other 3 bits are the multiplier.
Decimal 15, hex f, gives the maximum: 7 * 80usSigned-off-by: Cliff Wickman
Link: http://lkml.kernel.org/r/20110621122243.117324443@sgi.com
Signed-off-by: Ingo Molnar -
Remove the large stack-resident cpumask_t from
reset_with_ipi()'s stack by allocating one per uvhub.Due to the limited size of the stack the potentially huge cpumask_t may
cause stack overrun. We haven't seen it happen yet, but we need to make it
a practice not to push such structures onto the stack.Signed-off-by: Cliff Wickman
Reviewed-by: Pekka Enberg
Link: http://lkml.kernel.org/r/20110621122242.832589130@sgi.com
Signed-off-by: Ingo Molnar -
Rename 'bau_targ_hubmask' to 'pnmask' for clarity.
The BAU distribution bit mask is indexed by pnode number, not hub or
blade number. This important fact is not clear while the mask is
called a 'hubmask'.Signed-off-by: Cliff Wickman
Link: http://lkml.kernel.org/r/20110621122242.630995969@sgi.com
Signed-off-by: Ingo Molnar -
Make all the functions in uv_bau.h inline so that it can
be included in the fake prom (used in simulations).If not inlined the unused functions will generate compiler warnings.
Signed-off-by: Cliff Wickman
Reviewed-by: Pekka Enberg
Link: http://lkml.kernel.org/r/20110621122242.230529678@sgi.com
Signed-off-by: Ingo Molnar
30 May, 2011
1 commit
-
No code changes. Reformat definitions to make it more readable.
I fixed alignment of comments in the structure definitions.
Also aligned comments and most field definitions & values. Also
sorted the defines for the SHIFT & MASK values for each MMR.
This make the file visually much more acceptable.Some of the symbol names are still quite long. The file is based
on post-processing of verilog definitions that are used for the
node controller chip design. Although some symbol names are not
what I would chose, I would like to maintain compatibility with
the names used by the chip designers. We have a number of
cross-reference utilities & having common names is important.Signed-off-by: Jack Steiner
Link: http://lkml.kernel.org/r/20110527145256.GA31224@sgi.com
Signed-off-by: Ingo Molnar
--
arch/x86/include/asm/uv/uv_mmrs.h | 2873 +++++++++++++++++++++-----------------
1 file changed, 1600 insertions(+), 1273 deletions(-)
25 May, 2011
2 commits
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SGI UV's uv_tlb.c driver has become rather hard to read, with overly large
functions, non-standard coding style and (way) too long variable, constant
and function names and non-obvious code flow sequences.This patch improves the readability and maintainability of the driver
significantly, by doing the following strict code cleanups with no side
effects:- Split long functions into shorter logical functions.
- Shortened some variable and structure member names.
- Added special functions for reads and writes of MMR regs with
very long names.- Added the 'tunables' table to shortened tunables_write().
- Added the 'stat_description' table to shorten uv_ptc_proc_write().
- Pass fewer 'stat' arguments where it can be derived from the 'bcp'
argument.- Function definitions consistent on one line, and inline in few (short) cases.
- Moved some small structures and an atomic inline function to the header file.
- Moved some local variables to the blocks where they are used.
- Updated the copyright date.
- Shortened uv_write_global_mmr64() etc. using some aliasing; no
line breaks. Renamed many uv_.. functions that are not exported.- Aligned structure fields.
[ note that not all structures are aligned the same way though; I'd like
to keep the extensive commenting in some of them. ]- Shortened some long structure names.
- Standard pass/fail exit from init_per_cpu()
- Vertical alignment for mass initializations.
- More separation between blocks of code.
Tested on a 16-processor Altix UV.
Signed-off-by: Cliff Wickman
Cc: penberg@kernel.org
Link: http://lkml.kernel.org/r/E1QOw12-0004MN-Lp@eag09.americas.sgi.com
Signed-off-by: Ingo Molnar -
This patch adds support for a new version of the SGI UV hub
chip. The hub chip is the node controller that connects multiple
blades into a larger coherent SSI.For the most part, UV2 is compatible with UV1. The majority of
the changes are in the addresses of MMRs and in a few cases, the
contents of MMRs. These changes are the result in changes in the
system topology such as node configuration, processor types,
maximum nodes, physical address sizes, etc.Signed-off-by: Jack Steiner
Link: http://lkml.kernel.org/r/20110511175028.GA18006@sgi.com
Signed-off-by: Ingo Molnar
13 May, 2011
1 commit
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This is a fix for the SGI Altix-UV Broadcast Assist Unit code,
which is used for TLB flushing.Certain hardware configurations (that customers are ordering)
cause nasids (numa address space id's) to be non-consecutive.
Specifically, once you have more than 4 blades in a IRU
(Individual Rack Unit - or 1/2 rack) but less than the maximum
of 16, the nasid numbering becomes non-consecutive. This
currently results in a 'catastrophic error' (CATERR) detected by
the firmware during OS boot. The BAU is generating an 'INTD'
request that is targeting a non-existent nasid value. Such
configurations may also occur when a blade is configured off
because of hardware errors. (There is one UV hub per blade.)This patch is required to support such configurations.
The problem with the tlb_uv.c code is that is using the
consecutive hub numbers as indices to the BAU distribution bit
map. These are simply the ordinal position of the hub or blade
within its partition. It should be using physical node numbers
(pnodes), which correspond to the physical nasid values. Use of
the hub number only works as long as the nasids in the partition
are consecutive and increase with a stride of 1.This patch changes the index to be the pnode number, thus
allowing nasids to be non-consecutive.
It also provides a table in local memory for each cpu to
translate target cpu number to target pnode and nasid.
And it improves naming to properly reflect 'node' and 'uvhub'
versus 'nasid'.Signed-off-by: Cliff Wickman
Cc:
Link: http://lkml.kernel.org/r/E1QJmxX-0002Mz-Fk@eag09.americas.sgi.com
Signed-off-by: Ingo Molnar
10 May, 2011
1 commit
-
This fixes problems seen on UV systems handling NMIs from the
node controller.I isolated the "dazed..." messages that I saw earlier to a bug in
the BMC on our platform. It was sending NMIs w/o properly setting
a register that indicated the source of NMI.So rather than _assuming_ any unhandled NMI came from the UV system
maintenance console (SMC), add a check to verify that the SMC actually
sent the NMI.Signed-off-by: Jack Steiner
Cc: gorcunov@gmail.com
Cc: dzickus@redhat.com
Signed-off-by: Ingo Molnar
09 Mar, 2011
1 commit
-
The BAU's initialization of the broadcast description header is
lacking the coherence domain (high bits) in the nasid. This
causes a catastrophic system failure when running on a system
with multiple coherence domains.Signed-off-by: Cliff Wickman
LKML-Reference:
Signed-off-by: Ingo Molnar
04 Jan, 2011
1 commit
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Fix a hard-coded limit of a maximum of 16 cpu's per socket.
The UV Broadcast Assist Unit code initializes by scanning the
cpu topology of the system and assigning a master cpu for each
socket and UV hub. That scan had an assumption of a limit of 16
cpus per socket. With Westmere we are going over that limit.
The UV hub hardware will allow up to 32.If the scan finds the system has gone over that limit it returns
an error and we print a warning and fall back to doing TLB
shootdowns without the BAU.Signed-off-by: Cliff Wickman
Cc: # .37.x
LKML-Reference:
Signed-off-by: Ingo Molnar
18 Nov, 2010
1 commit
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This patch for SGI UV systems addresses a problem whereby
interrupt transactions being looped back from a local IOH,
through the hub to a local CPU can (erroneously) conflict with
IO port operations and other transactions.To workaound this we set a high bit in the APIC IDs used for
interrupts. This bit appears to be ignored by the sockets, but
it avoids the conflict in the hub.Signed-off-by: Dimitri Sivanich
LKML-Reference:
Signed-off-by: Ingo Molnar
___arch/x86/include/asm/uv/uv_hub.h | 4 ++++
arch/x86/include/asm/uv/uv_mmrs.h | 19 ++++++++++++++++++-
arch/x86/kernel/apic/x2apic_uv_x.c | 25 +++++++++++++++++++++++--
arch/x86/platform/uv/tlb_uv.c | 2 +-
arch/x86/platform/uv/uv_time.c | 4 +++-
5 files changed, 49 insertions(+), 5 deletions(-)
10 Nov, 2010
1 commit
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A new version of the SGI UV hub node controller is being
developed. A few of the MMRs (control registers) that exist on
the current hub no longer exist on the new hub. Fortunately,
there are alternate MMRs that are are functionally equivalent
and that exist on both hubs.This patch changes the UV code to use MMRs that exist in BOTH
versions of the hub node controller.Signed-off-by: Jack Steiner
LKML-Reference:
Signed-off-by: Ingo Molnar
27 Oct, 2010
1 commit
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Enable Westmere support on SGI UV. The UV initialization code is dependent on
the APICID bits. Westmere-EX uses different APIC bit mapping than Nehalem-EX.
This code reads the apic shift value from a UV MMR to do the proper bit
decoding to determint the pnode.Signed-off-by: Russ Anderson
LKML-Reference:
Signed-off-by: H. Peter Anvin
09 Jun, 2010
8 commits
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Streamline the large uv_flush_send_and_wait() function by use of
a couple of helper functions.And remove some excess comments.
Signed-off-by: Cliff Wickman
Cc: gregkh@suse.de
LKML-Reference:
Signed-off-by: Ingo Molnar -
Make the Broadcast Assist Unit driver use the BAU for TLB
shootdowns of cpu's on the local uvhub.It was previously thought that IPI might be faster to the cpu's
on the local hub. But the IPI operation would have to follow
the completion of the BAU broadcast anyway. So we broadcast to
the local uvhub in all cases except when the current cpu was the
only local cpu in the mask.This simplifies uv_flush_send_and_wait() in that it returns
either all shootdowns complete, or none.Adjust the statistics to account for shootdowns on the local
uvhub.Signed-off-by: Cliff Wickman
Cc: gregkh@suse.de
LKML-Reference:
Signed-off-by: Ingo Molnar -
Remove a faulty assumption that a long running BAU request has
encountered a hardware problem and will never finish.Numalink congestion can make a request appear to have
encountered such a problem, but it is not safe to cancel the
request. If such a cancel is done but a reply is later received
we can miss a TLB shootdown.We depend upon the max_bau_concurrent 'throttle' to prevent the
stay-busy case from happening.Signed-off-by: Cliff Wickman
Cc: gregkh@suse.de
LKML-Reference:
Signed-off-by: Ingo Molnar -
Move some structure definitions from the C code to the BAU
header file, and change the organization of that header file a
little.Signed-off-by: Cliff Wickman
Cc: gregkh@suse.de
LKML-Reference:
Signed-off-by: Ingo Molnar -
Use a pointer from the per-cpu BAU control structure to the
per-cpu BAU statistics structure.
We nearly always know the first before needing the second.Signed-off-by: Cliff Wickman
Cc: gregkh@suse.de
LKML-Reference:
Signed-off-by: Ingo Molnar -
The numalink network can become so congested that TLB shootdown
using the Broadcast Assist Unit becomes slower than using IPI's.In that case, disable the use of the BAU for a period of time.
The period is tunable. When the period expires the use of the
BAU is re-enabled. A count of these actions is added to the
statistics file.Signed-off-by: Cliff Wickman
Cc: gregkh@suse.de
LKML-Reference:
Signed-off-by: Ingo Molnar -
Make the Broadcast Assist Unit driver's nine tuning values variable by
making them accessible through a read/write debugfs file.The file will normally be mounted as
/sys/kernel/debug/sgi_uv/bau_tunables. The tunables are kept in each
cpu's per-cpu BAU structure.The patch also does a little name improvement, and corrects the reset of
two destination timeout counters.Signed-off-by: Cliff Wickman
Cc: gregkh@suse.de
LKML-Reference:
Signed-off-by: Ingo Molnar -
Calculate the Broadcast Assist Unit's destination timeout period from the
values in the relevant MMR's.Store it in each cpu's per-cpu BAU structure so that a destination
timeout can be differentiated from a 'plugged' situation in which all
software ack resources are already allocated and a timeout is pending.
That case returns an immediate destination error.Signed-off-by: Cliff Wickman
Cc: gregkh@suse.de
LKML-Reference:
Signed-off-by: Ingo Molnar
17 Apr, 2010
1 commit
-
Fix all sparse warnings in building uv_irq.c.
arch/x86/kernel/uv_irq.c:46:17: warning: symbol 'uv_irq_chip' was not declared. Should it be static?
arch/x86/kernel/uv_irq.c:143:50: error: no identifier for function argument
arch/x86/kernel/uv_irq.c:162:13: error: typename in expression
arch/x86/kernel/uv_irq.c:162:13: error: undefined identifier 'restrict'
arch/x86/kernel/uv_irq.c:250:44: error: no identifier for function argument
arch/x86/kernel/uv_irq.c:260:17: error: typename in expression
arch/x86/kernel/uv_irq.c:260:17: error: undefined identifier 'restrict'
arch/x86/kernel/uv_irq.c:233:50: warning: incorrect type in argument 3 (different signedness)
arch/x86/kernel/uv_irq.c:233:50: expected int *pnode
arch/x86/kernel/uv_irq.c:233:50: got unsigned int *
arch/x86/include/asm/uv/uv_hub.h:318:44: warning: incorrect type in argument 2 (different address spaces)
arch/x86/include/asm/uv/uv_hub.h:318:44: expected void volatile [noderef] *addr
arch/x86/include/asm/uv/uv_hub.h:318:44: got unsigned long *Signed-off-by: Randy Dunlap
Cc: Dimitri Sivanich
Cc: Russ Anderson
Cc: Robin Holt
Cc: Mike Travis
Cc: Cliff Wickman
Cc: Jack Steiner
LKML-Reference:
Signed-off-by: Ingo Molnar
15 Apr, 2010
1 commit
-
- increase performance of the interrupt handler
- release timed-out software acknowledge resources
- recover from continuous-busy status due to a hardware issue
- add a 'throttle' to keep a uvhub from sending more than a
specified number of broadcasts concurrently (work around the hardware issue)- provide a 'nobau' boot command line option
- rename 'pnode' and 'node' to 'uvhub' (the 'node' terminology
is ambiguous)- add some new statistics about the scope of broadcasts, retries, the
hardware issue and the 'throttle'- split off new function uv_bau_retry_msg() from
uv_bau_process_message() per community coding style feedback.- simplify the argument list to uv_bau_process_message(), per
community coding style feedback.Signed-off-by: Cliff Wickman
Cc: linux-mm@kvack.org
Cc: Jack Steiner
Cc: Russ Anderson
Cc: Mike Travis
Cc: "H. Peter Anvin"
Cc: Thomas Gleixner
LKML-Reference:
Signed-off-by: Ingo Molnar
11 Mar, 2010
1 commit
-
Update UV mmr definitions header file. Eliminate definitions no
longer needed. Move 2 definitions from tlb_uv.c into the header
file where they belong.Signed-off-by: Jack Steiner
LKML-Reference:
Signed-off-by: Ingo Molnar
01 Mar, 2010
1 commit
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* 'x86-uv-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
x86, uv: Remove recursion in uv_heartbeat_enable()
x86, uv: uv_global_gru_mmr_address() macro fix
x86, uv: Add serial number parameter to uv_bios_get_sn_info()
27 Feb, 2010
1 commit
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Enable NMI on all cpus in UV system and add an NMI handler
to dump_stack on each cpu.By default on x86 all the cpus except the boot cpu have NMI
masked off. This patch enables NMI on all cpus in UV system
and adds an NMI handler to dump_stack on each cpu. This
way if a system hangs we can NMI the machine and get a
backtrace from all the cpus.Version 2: Use x86_platform driver mechanism for nmi init, per
Ingo's suggestion.Version 3: Clean up Ingo's nits.
Signed-off-by: Russ Anderson
LKML-Reference:
Signed-off-by: Ingo Molnar
06 Feb, 2010
1 commit
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Add function to direct Legacy VGA I/O traffic to correct I/O Hub.
Signed-off-by: Mike Travis
LKML-Reference:
Cc: Thomas Gleixner
Cc: Robin Holt
Cc: Jack Steiner
Cc: Ingo Molnar
Cc: Jesse Barnes
Cc: David Airlie
Signed-off-by: Andrew Morton
Signed-off-by: H. Peter Anvin
16 Jan, 2010
1 commit
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Add function for determining the revision id of the SGI UV
node controller chip (HUB). This function is needed in a
subsequent patch.Signed-off-by: Jack Steiner
LKML-Reference:
Signed-off-by: H. Peter Anvin
08 Jan, 2010
1 commit
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Fix bug in uv_global_gru_mmr_address macro. Macro failed
to cast an int value to a long prior to a left shift > 32.Signed-off-by: Jack Steiner
LKML-Reference:
Cc:
Signed-off-by: H. Peter Anvin
29 Dec, 2009
1 commit
-
The wrong address was being used to write the SCIR led regs on
remote hubs. Also, there was an inconsistency between how BIOS
and the kernel indexed these regs. Standardize on using the
lower 6 bits of the APIC ID as the index.This patch fixes the problem of writing to an errant address to
a cpu # >= 64.Signed-off-by: Mike Travis
Reviewed-by: Jack Steiner
Cc: Robin Holt
Cc: Linus Torvalds
Cc: stable@kernel.org
LKML-Reference:
[ v2: fix a number of annoying checkpatch artifacts and whitespace noise ]
Signed-off-by: Ingo Molnar
18 Dec, 2009
1 commit
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Add system_serial_number to the information returned by
uv_bios_get_sn_info() UV BIOS call.Signed-off-by: Russ Anderson
LKML-Reference:
Cc: Jack Steiner
Signed-off-by: H. Peter Anvin
16 Dec, 2009
4 commits
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Create a function to generate the value that is written to the UV hub MMR
to cause an IPI interrupt to be sent. The function will be used in the
GRU message queue error recovery code that sends IPIs to nodes in remote
partitions.Signed-off-by: Jack Steiner
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
The UV BIOS has moved the location of some of their pointers to the
"partition reserved page" from memory into a uv hub MMR. The GRU does not
support bcopy operations from MMR space so we need to special case the MMR
addresses using VLOAD operations.Additionally, the BIOS call for registering a message queue watchlist has
removed the 'blade' value and eliminated the structure that was being
passed in. This is also reflected in this patch.Signed-off-by: Robin Holt
Cc: Jack Steiner
Cc: Ingo Molnar
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Provide a mechanism for determining if a global physical address is
pointing to a UV hub MMR.Signed-off-by: Robin Holt
Cc: Jack Steiner
Cc: Ingo Molnar
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
The UV BIOS has been updated to implement some of our interface
functionality differently than originally expected. These patches update
the kernel to the bios implementation and include a few minor bug fixes
which prevent us from doing significant testing on real hardware.This patch:
For SGI UV systems, translate from a global physical address back to a
socket physical address. This does nothing to ensure the socket physical
address is actually addressable by the kernel. That is the responsibility
of the user of the function.Signed-off-by: Robin Holt
Cc: Jack Steiner
Cc: Ingo Molnar
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
