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Merge tag 'drm-intel-fixes-2015-03-12' of git://anongit.freedesktop.org/drm-intel into drm-fixes

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More i915 fixes, three out of four are fixes to old bugs, cc: stable.

* tag 'drm-intel-fixes-2015-03-12' of git://anongit.freedesktop.org/drm-intel:
  drm/i915: Prevent TLB error on first execution on SNB
  drm/i915: Do both mt and gen6 style forcewake reset on ivb probe
  drm/i915: Make WAIT_IOCTL negative timeouts be indefinite again
  drm/i915: use in_interrupt() not in_irq() to check context
This commit is contained in:
Dave Airlie 2015-03-13 09:15:01 +10:00
commit 17b263f6ea
3 changed files with 28 additions and 7 deletions
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25
drivers/gpu/drm/i915/i915_gem.c
View File

@ -2936,9 +2936,9 @@ i915_gem_wait_ioctl(struct drm_device *dev, void *data, struct drm_file *file)
req = obj->last_read_req;
/* Do this after OLR check to make sure we make forward progress polling
* on this IOCTL with a timeout <=0 (like busy ioctl)
* on this IOCTL with a timeout == 0 (like busy ioctl)
*/
if (args->timeout_ns <= 0) {
if (args->timeout_ns == 0) {
ret = -ETIME;
goto out;
}
@ -2948,7 +2948,8 @@ i915_gem_wait_ioctl(struct drm_device *dev, void *data, struct drm_file *file)
i915_gem_request_reference(req);
mutex_unlock(&dev->struct_mutex);
ret = __i915_wait_request(req, reset_counter, true, &args->timeout_ns,
ret = __i915_wait_request(req, reset_counter, true,
args->timeout_ns > 0 ? &args->timeout_ns : NULL,
file->driver_priv);
mutex_lock(&dev->struct_mutex);
i915_gem_request_unreference(req);
@ -4792,6 +4793,9 @@ i915_gem_init_hw(struct drm_device *dev)
if (INTEL_INFO(dev)->gen < 6 && !intel_enable_gtt())
return -EIO;
/* Double layer security blanket, see i915_gem_init() */
intel_uncore_forcewake_get(dev_priv, FORCEWAKE_ALL);
if (dev_priv->ellc_size)
I915_WRITE(HSW_IDICR, I915_READ(HSW_IDICR) | IDIHASHMSK(0xf));
@ -4824,7 +4828,7 @@ i915_gem_init_hw(struct drm_device *dev)
for_each_ring(ring, dev_priv, i) {
ret = ring->init_hw(ring);
if (ret)
return ret;
goto out;
}
for (i = 0; i < NUM_L3_SLICES(dev); i++)
@ -4841,9 +4845,11 @@ i915_gem_init_hw(struct drm_device *dev)
DRM_ERROR("Context enable failed %d\n", ret);
i915_gem_cleanup_ringbuffer(dev);
return ret;
goto out;
}
out:
intel_uncore_forcewake_put(dev_priv, FORCEWAKE_ALL);
return ret;
}
@ -4877,6 +4883,14 @@ int i915_gem_init(struct drm_device *dev)
dev_priv->gt.stop_ring = intel_logical_ring_stop;
}
/* This is just a security blanket to placate dragons.
* On some systems, we very sporadically observe that the first TLBs
* used by the CS may be stale, despite us poking the TLB reset. If
* we hold the forcewake during initialisation these problems
* just magically go away.
*/
intel_uncore_forcewake_get(dev_priv, FORCEWAKE_ALL);
ret = i915_gem_init_userptr(dev);
if (ret)
goto out_unlock;
@ -4903,6 +4917,7 @@ int i915_gem_init(struct drm_device *dev)
}
out_unlock:
intel_uncore_forcewake_put(dev_priv, FORCEWAKE_ALL);
mutex_unlock(&dev->struct_mutex);
return ret;

2
drivers/gpu/drm/i915/intel_display.c
View File

@ -9716,7 +9716,7 @@ void intel_check_page_flip(struct drm_device *dev, int pipe)
struct drm_crtc *crtc = dev_priv->pipe_to_crtc_mapping[pipe];
struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
WARN_ON(!in_irq());
WARN_ON(!in_interrupt());
if (crtc == NULL)
return;

8
drivers/gpu/drm/i915/intel_uncore.c
View File

@ -1048,8 +1048,14 @@ static void intel_uncore_fw_domains_init(struct drm_device *dev)
/* We need to init first for ECOBUS access and then
* determine later if we want to reinit, in case of MT access is
* not working
* not working. In this stage we don't know which flavour this
* ivb is, so it is better to reset also the gen6 fw registers
* before the ecobus check.
*/
__raw_i915_write32(dev_priv, FORCEWAKE, 0);
__raw_posting_read(dev_priv, ECOBUS);
fw_domain_init(dev_priv, FW_DOMAIN_ID_RENDER,
FORCEWAKE_MT, FORCEWAKE_MT_ACK);