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| author | Chris Wilson <chris@chris-wilson.co.uk> | 2016-07-20 12:31:55 (GMT) |
|---|---|---|
| committer | Chris Wilson <chris@chris-wilson.co.uk> | 2016-07-20 12:40:14 (GMT) |
| commit | 406ea8d22f9aeee6b484b35241ea5195c3af66a6 (patch) | |
| tree | 000e9299d7c55989538c73e2e7f03af064ce0ba2 /drivers/gpu/drm/i915/i915_gem_gtt.c | |
| parent | 34911fd30c6183036de67aa96e2c5a74cd43c9cf (diff) | |
| download | linux-406ea8d22f9aeee6b484b35241ea5195c3af66a6.tar.xz | |
drm/i915: Treat ringbuffer writes as write to normal memory
Ringbuffers are now being written to either through LLC or WC paths, so
treating them as simply iomem is no longer adequate. However, for the
older !llc hardware, the hardware is documentated as treating the TAIL
register update as serialising, so we can relax the barriers when filling
the rings (but even if it were not, it is still an uncached register write
and so serialising anyway.).
For simplicity, let's ignore the iomem annotation.
v2: Remove iomem from ringbuffer->virtual_address
v3: And for good measure add iomem elsewhere to keep sparse happy
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com> #v2
Link: http://patchwork.freedesktop.org/patch/msgid/1469005202-9659-8-git-send-email-chris@chris-wilson.co.uk
Link: http://patchwork.freedesktop.org/patch/msgid/1469017917-15134-7-git-send-email-chris@chris-wilson.co.uk
Diffstat (limited to 'drivers/gpu/drm/i915/i915_gem_gtt.c')
| -rw-r--r-- | drivers/gpu/drm/i915/i915_gem_gtt.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/gpu/drm/i915/i915_gem_gtt.c b/drivers/gpu/drm/i915/i915_gem_gtt.c index 10f1e32..30da543 100644 --- a/drivers/gpu/drm/i915/i915_gem_gtt.c +++ b/drivers/gpu/drm/i915/i915_gem_gtt.c @@ -3681,7 +3681,7 @@ void __iomem *i915_vma_pin_iomap(struct i915_vma *vma) lockdep_assert_held(&vma->vm->dev->struct_mutex); if (WARN_ON(!vma->obj->map_and_fenceable)) - return ERR_PTR(-ENODEV); + return IO_ERR_PTR(-ENODEV); GEM_BUG_ON(!vma->is_ggtt); GEM_BUG_ON((vma->bound & GLOBAL_BIND) == 0); @@ -3692,7 +3692,7 @@ void __iomem *i915_vma_pin_iomap(struct i915_vma *vma) vma->node.start, vma->node.size); if (ptr == NULL) - return ERR_PTR(-ENOMEM); + return IO_ERR_PTR(-ENOMEM); vma->iomap = ptr; } |