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  1. 08 12月, 2009 1 次提交
  3. 01 12月, 2009 1 次提交
  5. 06 11月, 2009 2 次提交
    • C
      drm/i915: debugfs interface to manually reset the GPU · f3cd474b
      由 Chris Wilson 提交于 
      Create a /debug/dri/%d/i915_wedged file to display the current wedged
status, and to enable setting that value. On an i965, this will also
trigger a GPU reset.

Useful in order to attempt to recover from some error conditions that
are not currently caught by the automatic hang detection code.
Signed-off-by: NChris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: NEric Anholt <eric@anholt.net>
      f3cd474b
    • C
      drm/i915: Avoid potential sleep whilst holding spinlock · ba86bf8b
      由 Chris Wilson 提交于 
      Miles Lane reported the following error:
2 locks held by cat/4179:
  #0:  (&p->lock){+.+.+.}, at: [<c10a3884>] seq_read+0x25/0x315
  #1:  (&dev_priv->mm.active_list_lock){+.+...}, at: [<c119a854>]
i915_batchbuffer_info+0x2b/0x124
Pid: 4179, comm: cat Not tainted 2.6.32-rc5-git1 #2
Call Trace:
  [<c104874f>] ? __debug_show_held_locks+0x1e/0x20
  [<c1023fb0>] __might_sleep+0xf0/0xf7
  [<c101c393>] kmap+0x17/0x58
  [<c119a8d6>] i915_batchbuffer_info+0xad/0x124
  [<c10a39bf>] seq_read+0x160/0x315
  [<c108fb8c>] ? rw_verify_area+0x98/0xbb
  [<c10a385f>] ? seq_read+0x0/0x315
  [<c1090331>] vfs_read+0x75/0xa9
  [<c10903f9>] sys_read+0x3b/0x5d
  [<c1002a8f>] sysenter_do_call+0x12/0x36

The fix is relatively simple, use the atomic variants of kmap() that
avoid the potential sleep.
Signed-off-by: NChris Wilson <chris@chris-wilson.co.uk>
Cc: Miles Lane <miles.lane@gmail.com>
Signed-off-by: NEric Anholt <eric@anholt.net>
      ba86bf8b
  7. 18 9月, 2009 1 次提交
  9. 07 9月, 2009 1 次提交
    • C
      drm/i915: Pad ringbuffer with NOOPs before wrapping · 0ef82af7
      由 Chris Wilson 提交于 
      According to the docs, the ringbuffer is not allowed to wrap in the middle
of an instruction.

G45 PRM, Vol 1b, p101:
  While the “free space” wrap may allow commands to be wrapped around the
  end of the Ring Buffer, the wrap should only occur between commands.
  Padding (with NOP) may be required to follow this restriction.

Do as commanded.

[Having seen bug reports where there is evidence of split commands, but
apparently the GPU has continued on merrily before a bizarre and untimely
death, this may or may not fix a few random hangs.]
Signed-off-by: NChris Wilson <chris@chris-wilson.co.uk>
CC: Eric Anholt <eric@anholt.net>
Signed-off-by: NEric Anholt <eric@anholt.net>
      0ef82af7
  11. 05 9月, 2009 3 次提交
  13. 14 7月, 2009 1 次提交
  15. 08 7月, 2009 2 次提交
  17. 02 7月, 2009 1 次提交
  19. 18 6月, 2009 1 次提交
  21. 09 4月, 2009 1 次提交
    • B
      drm/i915: Implement batch and ring buffer dumping · 6911a9b8
      由 Ben Gamari 提交于 
      We create a debugfs node (i915_ringbuffer_data) to expose a hex dump
of the ring buffer itself.  We also expose another debugfs node
(i915_ringbuffer_info) with information on the state (i.e. head, tail
addresses) of the ringbuffer.

For batchbuffer dumping, we look at the device's active_list, dumping
each object which has I915_GEM_DOMAIN_COMMAND in its read
domains. This is all exposed through the dri/i915_batchbuffers debugfs
file with a header for each object (giving the objects gtt_offset so
that it can be matched against the offset given in the
BATCH_BUFFER_START command.
Signed-off-by: NBen Gamari <bgamari@gmail.com>
Signed-off-by: NCarl Worth <cworth@cworth.org>
Signed-off-by: NEric Anholt <eric@anholt.net>
      6911a9b8
  23. 02 4月, 2009 1 次提交
  25. 28 3月, 2009 5 次提交
  27. 13 3月, 2009 4 次提交