linux-toradex.git/include/drm/ttm/ttm_bo_api.h, branch v3.12-rc6

drm/ttm: convert to unified vma offset manager

2013-07-25T10:47:07+00:00

Use the new vma-manager infrastructure. This doesn't change any
implementation details as the vma-offset-manager is nearly copied 1-to-1
from TTM.

The vm_lock is moved into the offset manager so we can drop it from TTM.
During lookup, we use the vma locking helpers to take a reference to the
found object.
In all other scenarios, locking stays the same as before. We always
guarantee that drm_vma_offset_remove() is called only during destruction.
Hence, helpers like drm_vma_node_offset_addr() are always safe as long as
the node has a valid offset.

This also drops the addr_space_offset member as it is a copy of vm_start
in vma_node objects. Use the accessor functions instead.

v4:
 - remove vm_lock
 - use drm_vma_offset_lock_lookup() to protect lookup (instead of vm_lock)

Cc: Dave Airlie 
Cc: Ben Skeggs 
Cc: Maarten Lankhorst 
Cc: Martin Peres 
Cc: Alex Deucher 
Cc: Thomas Hellstrom 
Signed-off-by: David Herrmann 
Reviewed-by: Daniel Vetter 
Signed-off-by: Dave Airlie

drm/ttm: get rid of ttm_bo_is_reserved

2013-06-28T02:04:15+00:00

Signed-off-by: Maarten Lankhorst 
Signed-off-by: Dave Airlie

drm/ttm: convert to the reservation api

2013-06-28T02:04:01+00:00

Now that the code is compatible in semantics, flip the switch.
Use ww_mutex instead of the homegrown implementation.

ww_mutex uses -EDEADLK to signal that the caller has to back off,
and -EALREADY to indicate this buffer is already held by the caller.

ttm used -EAGAIN and -EDEADLK for those, respectively. So some changes
were needed to handle this correctly.

Signed-off-by: Maarten Lankhorst 
Reviewed-by: Jerome Glisse 
Signed-off-by: Dave Airlie

drm/ttm: make ttm reservation calls behave like reservation calls

2013-06-28T02:02:20+00:00

This commit converts the source of the val_seq counter to
the ww_mutex api. The reservation objects are converted later,
because there is still a lockdep splat in nouveau that has to
resolved first.

Signed-off-by: Maarten Lankhorst 
Reviewed-by: Jerome Glisse 
Signed-off-by: Dave Airlie

drm/ttm: remove no_wait_reserve, v3

2012-12-10T10:21:30+00:00

All items on the lru list are always reservable, so this is a stupid
thing to keep. Not only that, it is used in a way which would
guarantee deadlocks if it were ever to be set to block on reserve.

This is a lot of churn, but mostly because of the removal of the
argument which can be nested arbitrarily deeply in many places.

No change of code in this patch except removal of the no_wait_reserve
argument, the previous patch removed the use of no_wait_reserve.

v2:
 - Warn if -EBUSY is returned on reservation, all objects on the list
   should be reservable. Adjusted patch slightly due to conflicts.
v3:
 - Focus on no_wait_reserve removal only.

Signed-off-by: Maarten Lankhorst 
Reviewed-by: Thomas Hellstrom 
Signed-off-by: Dave Airlie

drm/ttm: alter cpu_writers to return -EBUSY in ttm_execbuf_util reservations

2012-11-20T06:17:35+00:00

This is similar to other platforms that don't allow command submission
to buffers locked on the cpu.

Signed-off-by: Maarten Lankhorst 
Reviewed-by: Thomas Hellstrom 
Signed-off-by: Dave Airlie

drm/ttm: remove sync_obj_arg member

2012-11-20T06:09:55+00:00

vmwgfx was its only user and always sets it to the same..

Signed-off-by: Maarten Lankhorst 
Reviewed-By: Thomas Hellstrom 
Signed-off-by: Dave Airlie

drm/ttm: remove ttm_buffer_object->buffer_start

2012-11-20T06:06:19+00:00

All drivers set it to 0 and nothing uses it.

Signed-off-by: Marcin Slusarz 
Reviewed-by: Thomas Hellstrom 
Signed-off-by: Dave Airlie

drm/ttm: add ttm_bo_is_reserved

2012-11-07T00:44:38+00:00

Signed-off-by: Maarten Lankhorst 
Reviewed-by: Thomas Hellstrom 
Signed-off-by: Dave Airlie

UAPI: (Scripted) Convert #include "..." to #include in kernel system headers

2012-10-02T17:01:25+00:00

Convert #include "..." to #include  in kernel system headers.

Signed-off-by: David Howells 
Acked-by: Arnd Bergmann 
Acked-by: Thomas Gleixner 
Acked-by: Paul E. McKenney 
Acked-by: Dave Jones