diff options
Diffstat (limited to 'drivers/gpu/drm/i915/i915_gem.c')
| -rw-r--r-- | drivers/gpu/drm/i915/i915_gem.c | 19 |
1 files changed, 18 insertions, 1 deletions
diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c index 0fdb3d29cbbb..5c4657a54f97 100644 --- a/drivers/gpu/drm/i915/i915_gem.c +++ b/drivers/gpu/drm/i915/i915_gem.c @@ -2003,6 +2003,7 @@ static int __wait_seqno(struct intel_ring_buffer *ring, u32 seqno, } switch (end) { + case -EIO: case -EAGAIN: /* Wedged */ case -ERESTARTSYS: /* Signal */ return (int)end; @@ -3726,6 +3727,22 @@ void i915_gem_init_ppgtt(struct drm_device *dev) } } +static bool +intel_enable_blt(struct drm_device *dev) +{ + if (!HAS_BLT(dev)) + return false; + + /* The blitter was dysfunctional on early prototypes */ + if (IS_GEN6(dev) && dev->pdev->revision < 8) { + DRM_INFO("BLT not supported on this pre-production hardware;" + " graphics performance will be degraded.\n"); + return false; + } + + return true; +} + int i915_gem_init_hw(struct drm_device *dev) { @@ -3749,7 +3766,7 @@ i915_gem_init_hw(struct drm_device *dev) goto cleanup_render_ring; } - if (HAS_BLT(dev)) { + if (intel_enable_blt(dev)) { ret = intel_init_blt_ring_buffer(dev); if (ret) goto cleanup_bsd_ring; |