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From: Guo Chao <yan@linux.vnet.ibm.com>
To: linuxppc-dev@lists.ozlabs.org
Cc: yan@linux.vnet.ibm.com, gwshan@linux.vnet.ibm.com
Subject: [PATCH v2 0/6] powerpc/powernv: Support M64 window
Date: Wed, 16 Jul 2014 20:24:29 +0800	[thread overview]
Message-ID: <1405513475-24220-1-git-send-email-yan@linux.vnet.ibm.com> (raw)

This version is rebased on top of Gavin's patches of EEH support for guest and
related fixes which are supposed to be merged in 3.17.

Changed from v1:
	* Don't overwrite PE flags
	* Don't return segment alignment if M64 is not supported
	* Output M64 total size and segment size together with M32 and IO

Currently, all MMIO resources, including 64-bits MMIO resources are hooked
to PHB 32-bits MMIO BAR, which has limited space. If there're PCI devices
with large 64-bits MMIO BAR (could reach 1GB), we're running out of MMIO
resources (as well as PE numbers) quickly. The patchset reuses the M32
infrastructure to support M64:

   * The last M64 BAR covers all M64 aperatus and that's shared by all PEs.
   * Reuse ppc_md.pcibios_window_alignment() to affect resource assignment
     in PCI core so that we can get well segmented 64-bits window of PCI
     bridges.
   * One PCI bus might require multiple discrete M64 segment. We invent
     if we're going to unfreeze any one in the group.

Gavin Shan (5):
  powerpc/powernv: Allow to freeze PE
  powerpc/powernv: Split ioda_eeh_get_state()
  powerpc/powernv: Handle compound PE
  powerpc/powernv: Handle compound PE for EEH
  powerpc/powernv: Handle compound PE in config accessors

Guo Chao (1):
  powerpc/powernv: Enable M64 aperatus for PHB3

 arch/powerpc/include/asm/opal.h                |  17 +-
 arch/powerpc/platforms/powernv/eeh-ioda.c      | 293 +++++++++-------
 arch/powerpc/platforms/powernv/opal-wrappers.S |   2 +-
 arch/powerpc/platforms/powernv/pci-ioda.c      | 448 +++++++++++++++++++++++--
 arch/powerpc/platforms/powernv/pci.c           |  87 +++--
 arch/powerpc/platforms/powernv/pci.h           |  23 ++
 6 files changed, 694 insertions(+), 176 deletions(-)

-- 
1.9.1

             reply	other threads:[~2014-07-16 12:24 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-07-16 12:24 Guo Chao [this message]
2014-07-16 12:24 ` [PATCH v2 1/6] powerpc/powernv: Enable M64 aperatus for PHB3 Guo Chao
2014-07-17  4:40   ` Gavin Shan
2014-07-16 12:24 ` [PATCH v2 2/6] powerpc/powernv: Allow to freeze PE Guo Chao
2014-07-16 12:24 ` [PATCH v2 3/6] powerpc/powernv: Split ioda_eeh_get_state() Guo Chao
2014-07-16 12:24 ` [PATCH v2 4/6] powerpc/powernv: Handle compound PE Guo Chao
2014-07-16 12:24 ` [PATCH v2 5/6] powerpc/powernv: Handle compound PE for EEH Guo Chao
2014-07-16 12:24 ` [PATCH v2 6/6] powerpc/powernv: Handle compound PE in config accessors Guo Chao

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