[Intel-gfx] [PATCH v3 0/5] Command parser batch buffer copy

[bradley.d.volkin at intel.com]

From: Brad Volkin <bradley.d.volkin at intel.com>

This is v3 of the series I sent here:
http://lists.freedesktop.org/archives/intel-gfx/2014-July/048705.html

Most of the previous commentary still applies. We've fixed the secure
dispatch regression though, so the series now puts the parser into
enabling mode in patch 2.

There are currently some regressions. I've sent i-g-t patches for a couple that
are test issues. The remaining issues are:

drv_hangman error-state-capture-*
    The test has checks that the logged 'gtt_offset' matches the expected
    offset of the userspace-supplied batch buffer. Similarly for the address
    in an MI_BATCH_BUFFER_START command found in the logged ringbuffer contents.
    These obviously won't match if the buffer submitted to hardware is from the
    batch pool instead of the one from userspace.

gem_reloc_vs_gpu *-thrash-inactive
gem_persistent_relocs *-thrash-inactive
    These fail with this type of error:

        Test assertion failure function do_test, file gem_reloc_vs_gpu.c:221:
        Failed assertion: test == 0xdeadbeef
        mismatch in buffer 0: 0x00000000 instead of 0xdeadbeef
        child 6 failed with exit status 99
        Subtest forked-thrash-inactive: FAIL (3.824s)

    One crashed, apparently in i915_gem_object_move_to_inactive() called via
    i915_gem_reset(). I assume there's an issue with my active tracking or
    madv usage for batch pool objects. Any input would be helpful.

gem_cs_tlb
    This test takes longer and may time out.

Brad Volkin (5):
  drm/i915: Implement a framework for batch buffer pools
  drm/i915: Use batch pools with the command parser
  drm/i915: Add a batch pool debugfs file
  drm/i915: Add batch pool details to i915_gem_objects debugfs
  drm/i915: Use batch length instead of object size in command parser

 Documentation/DocBook/drm.tmpl             |   5 +
 drivers/gpu/drm/i915/Makefile              |   1 +
 drivers/gpu/drm/i915/i915_cmd_parser.c     | 102 +++++++++++++++----
 drivers/gpu/drm/i915/i915_debugfs.c        |  86 ++++++++++++++--
 drivers/gpu/drm/i915/i915_dma.c            |   1 +
 drivers/gpu/drm/i915/i915_drv.h            |  26 +++++
 drivers/gpu/drm/i915/i915_gem.c            |  11 +++
 drivers/gpu/drm/i915/i915_gem_batch_pool.c | 153 +++++++++++++++++++++++++++++
 drivers/gpu/drm/i915/i915_gem_execbuffer.c |  62 +++++++++++-
 9 files changed, 416 insertions(+), 31 deletions(-)
 create mode 100644 drivers/gpu/drm/i915/i915_gem_batch_pool.c

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1.9.1