diff options
| author | Tvrtko Ursulin <tvrtko.ursulin@intel.com> | 2018-12-03 16:33:19 +0300 |
|---|---|---|
| committer | Tvrtko Ursulin <tvrtko.ursulin@intel.com> | 2018-12-04 15:23:14 +0300 |
| commit | 25d140faaa25f728159eb8c304eae53d88a7f14e (patch) | |
| tree | b343a288fef58387ac5a11a9d4b711fa162472d5 /drivers/gpu/drm/i915/i915_drv.c | |
| parent | 635b3bc6f514f7fd927309a51ecf12b6f9afcac1 (diff) | |
| download | linux-25d140faaa25f728159eb8c304eae53d88a7f14e.tar.xz | |
drm/i915: Record GT workarounds in a list
To enable later verification of GT workaround state at various stages of
driver lifetime, we record the list of applicable ones per platforms to a
list, from which they are also applied.
The added data structure is a simple array of register, mask and value
items, which is allocated on demand as workarounds are added to the list.
This is a temporary implementation which later in the series gets fused
with the existing per context workaround list handling. It is separated at
this stage since the following patch fixes a bug which needs to be as easy
to backport as possible.
Also, since in the following patch we will be adding a new class of
workarounds (per engine) which can be applied from interrupt context, we
straight away make the provision for safe read-modify-write cycle.
v2:
* Change dev_priv to i915 along the init path. (Chris Wilson)
* API rename. (Chris Wilson)
v3:
* Remove explicit list size tracking in favour of growing the allocation
in power of two chunks. (Chris Wilson)
v4:
Chris Wilson:
* Change wa_list_finish to early return.
* Copy workarounds using the compiler for static checking.
* Do not bother zeroing unused entries.
* Re-order struct i915_wa_list.
v5:
* kmalloc_array.
* Whitespace cleanup.
Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Link: https://patchwork.freedesktop.org/patch/msgid/20181203133319.10174-1-tvrtko.ursulin@linux.intel.com
Diffstat (limited to 'drivers/gpu/drm/i915/i915_drv.c')
| -rw-r--r-- | drivers/gpu/drm/i915/i915_drv.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/i915_drv.c b/drivers/gpu/drm/i915/i915_drv.c index c2a3ba7e09e0..6f497cf31ffc 100644 --- a/drivers/gpu/drm/i915/i915_drv.c +++ b/drivers/gpu/drm/i915/i915_drv.c @@ -1467,6 +1467,7 @@ static int i915_driver_init_hw(struct drm_i915_private *dev_priv) intel_uncore_sanitize(dev_priv); + intel_gt_init_workarounds(dev_priv); i915_gem_load_init_fences(dev_priv); /* On the 945G/GM, the chipset reports the MSI capability on the |