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  1. 21 Nov, 2005 1 commit
  3. 11 Nov, 2005 1 commit
    • Mark Maule's avatar
      [IA64-SGI] set altix preferred console · ff51224c
      Mark Maule authored 
      

Fix default VGA console on SN platforms.  Since SN firmware does not pass
enough ACPI information to identify VGA cards and the associated legacy IO/MEM
addresses, we rely on the EFI PCDP table.  Since the linux pcdp driver is
optional (and overridden if console= directives are used) SN duplicates a
portion of the pcdp scan code to identify if there is a usable console VGA
adapter.  Additionally, dup necessary pcdp related structs to avoid dragging
drivers/pcdp.h into a more public location.
Signed-off-by: default avatarMark Maule <maule@sgi.com>
Signed-off-by: default avatarTony Luck <tony.luck@intel.com>
      ff51224c
  5. 10 Nov, 2005 2 commits
  7. 28 Oct, 2005 1 commit
  9. 27 Oct, 2005 1 commit
    • Dean Roe's avatar
      [IA64] - Avoid slow TLB purges on SGI Altix systems · c1902aae
      Dean Roe authored 
      

flush_tlb_all() can be a scaling issue on large SGI Altix systems
since it uses the global call_lock and always executes on all cpus.
When a process enters flush_tlb_range() to purge TLBs for another
process, it is possible to avoid flush_tlb_all() and instead allow
sn2_global_tlb_purge() to purge TLBs only where necessary.

This patch modifies flush_tlb_range() so that this case can be handled
by platform TLB purge functions and updates ia64_global_tlb_purge()
accordingly.  sn2_global_tlb_purge() now calculates the region register
value from the mm argument introduced with this patch.
Signed-off-by: default avatarDean Roe <roe@sgi.com>
Signed-off-by: default avatarTony Luck <tony.luck@intel.com>
      c1902aae
  11. 25 Oct, 2005 4 commits
  13. 15 Sep, 2005 1 commit
    • Jack Steiner's avatar
      [IA64] Cleanup use of various #defines related to nodes · 24ee0a6d
      Jack Steiner authored 
      

Some of the SN code & #defines related to compact nodes & IO discovery
have gotten stale over the years. This patch attempts to clean them up.
Some of the various SN MAX_xxx #defines were also unclear & misused.

The primary changes are:

	- use MAX_NUMNODES. This is the generic linux #define for the number
	  of nodes that are known to the generic kernel. Arrays & loops
	  for constructs that are 1:1 with linux-defined nodes should
	  use the linux #define - not an SN equivalent.

	- use MAX_COMPACT_NODES for MAX_NUMNODES + NUM_TIOS. This is the
	  number of nodes in the SSI system. Compact nodes are a hack to
	  get around the IA64 architectural limit of 256 nodes. Large SGI
	  systems have more than 256 nodes. When we upgrade to ACPI3.0,
	  I _hope_ that all nodes will be real nodes that are known to
	  the generic kernel. That will allow us to delete the notion
	  of "compact nodes".

	- add MAX_NUMALINK_NODES for the total number of nodes that
	  are in the numalink domain - all partitions.

	- simplified (understandable) scan_for_ionodes()

	- small amount of cleanup related to cnodes
Signed-off-by: default avatarJack Steiner <steiner@sgi.com>
Signed-off-by: default avatarTony Luck <tony.luck@intel.com>
      24ee0a6d
  15. 09 Sep, 2005 1 commit
  17. 08 Sep, 2005 2 commits
  19. 07 Sep, 2005 1 commit
  21. 06 Sep, 2005 2 commits
  23. 31 Aug, 2005 1 commit
  25. 26 Aug, 2005 2 commits
  27. 25 Aug, 2005 1 commit
  29. 24 Aug, 2005 4 commits
  31. 17 Aug, 2005 6 commits
  33. 16 Aug, 2005 2 commits
  35. 11 Aug, 2005 3 commits
  37. 26 Jul, 2005 1 commit
  39. 13 Jul, 2005 1 commit
  41. 12 Jul, 2005 1 commit
    • Christoph Lameter's avatar
      [IA64] Altix pcibus_to_node implementation · 7c2a6c62
      Christoph Lameter authored 
      

The Altix subarch does not provide node information via ACPI. Instead hooks
are used to fixup pci structures. This patch determines the nodes for Altix
PCI busses.

Remote Bridges:
---------------
Altix supports remote I/O nodes without memory or processors but with bridges.
The TIOCA type of bridge is an AGP bridge and the PROM provides information
about the closest node. That information will be returned by pcibus_to_node.

The TIOCP remote bridge type is a PCI bridge but the PROM does not provide a
closest node id. pcibus_to_node will return -1 for devices on those bridges
meaning that device control structures may be allocated on any node.

Safeguard:
----------
Should the fixups result in invalid node information for a pci controller then
a warning will be printed and pcibus_to_node will return -1.


This patch also fixes the "FIXME" in sn_dma_alloc_coherent. This means that
dma_alloc_coherent will now use alloc_pages_node to allocate memory local to
the node that the PCI device is connected to.
Signed-off-by: default avatarChristoph Lameter <clameter@sgi.com>
Signed-off-by: default avatarTony Luck <tony.luck@intel.com>
      7c2a6c62
  43. 11 Jul, 2005 1 commit