[RFC 13/28] drm/i915: Convert i915_gem_init_hw to intel_gt

Tvrtko Ursulin
2019-06-13T13:39:18Z

From: Tvrtko Ursulin <tvrtko.ursulin@intel.com>

More removal of implicit dev_priv from using old mmio accessors.

Actually the top level function remains but is split into a part which
writes to i915 and part which operates on intel_gt in order to initialize
the hardware.

GuC and engines are the only odd ones out remaining.

Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
---
drivers/gpu/drm/i915/i915_gem.c | 66 ++++++++++++++++++++-------------
1 file changed, 40 insertions(+), 26 deletions(-)

diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c
index e54cd30534dc..b6f450e782e7 100644
--- a/drivers/gpu/drm/i915/i915_gem.c
+++ b/drivers/gpu/drm/i915/i915_gem.c
@@ -1234,28 +1234,32 @@ static void init_unused_rings(struct intel_gt *gt)
}
}

-int i915_gem_init_hw(struct drm_i915_private *dev_priv)
+static int init_hw(struct intel_gt *gt)
{
+ struct drm_i915_private *i915 = gt->i915;
+ struct intel_uncore *uncore = gt->uncore;
int ret;

- dev_priv->gt.last_init_time = ktime_get();
+ gt->last_init_time = ktime_get();

/* Double layer security blanket, see i915_gem_init() */
- intel_uncore_forcewake_get(&dev_priv->uncore, FORCEWAKE_ALL);
+ intel_uncore_forcewake_get(uncore, FORCEWAKE_ALL);

- if (HAS_EDRAM(dev_priv) && INTEL_GEN(dev_priv) < 9)
- I915_WRITE(HSW_IDICR, I915_READ(HSW_IDICR) | IDIHASHMSK(0xf));
+ if (HAS_EDRAM(i915) && INTEL_GEN(i915) < 9)
+ intel_uncore_rmw(uncore, HSW_IDICR, 0, IDIHASHMSK(0xf));

- if (IS_HASWELL(dev_priv))
- I915_WRITE(MI_PREDICATE_RESULT_2, IS_HSW_GT3(dev_priv) ?
- LOWER_SLICE_ENABLED : LOWER_SLICE_DISABLED);
+ if (IS_HASWELL(i915))
+ intel_uncore_write(uncore,
+ MI_PREDICATE_RESULT_2,
+ IS_HSW_GT3(i915) ?
+ LOWER_SLICE_ENABLED : LOWER_SLICE_DISABLED);

/* Apply the GT workarounds... */
- intel_gt_apply_workarounds(&dev_priv->gt);
+ intel_gt_apply_workarounds(gt);
/* ...and determine whether they are sticking. */
- intel_gt_verify_workarounds(&dev_priv->gt, "init");
+ intel_gt_verify_workarounds(gt, "init");

- intel_gt_init_swizzling(&dev_priv->gt);
+ intel_gt_init_swizzling(gt);

/*
* At least 830 can leave some of the unused rings
@@ -1263,48 +1267,58 @@ int i915_gem_init_hw(struct drm_i915_private *dev_priv)
* will prevent c3 entry. Makes sure all unused rings
* are totally idle.
*/
- init_unused_rings(&dev_priv->gt);
-
- BUG_ON(!dev_priv->kernel_context);
- ret = i915_terminally_wedged(dev_priv);
- if (ret)
- goto out;
+ init_unused_rings(gt);

- ret = i915_ppgtt_init_hw(&dev_priv->gt);
+ ret = i915_ppgtt_init_hw(gt);
if (ret) {
DRM_ERROR("Enabling PPGTT failed (%d)\n", ret);
goto out;
}

- ret = intel_wopcm_init_hw(&dev_priv->wopcm);
+ ret = intel_wopcm_init_hw(&i915->wopcm);
if (ret) {
DRM_ERROR("Enabling WOPCM failed (%d)\n", ret);
goto out;
}

/* We can't enable contexts until all firmware is loaded */
- ret = intel_uc_init_hw(dev_priv);
+ ret = intel_uc_init_hw(i915);
if (ret) {
DRM_ERROR("Enabling uc failed (%d)\n", ret);
goto out;
}

- intel_mocs_init_l3cc_table(&dev_priv->gt);
+ intel_mocs_init_l3cc_table(gt);

/* Only when the HW is re-initialised, can we replay the requests */
- ret = intel_engines_resume(dev_priv);
+ ret = intel_engines_resume(i915);
if (ret)
goto cleanup_uc;

- intel_uncore_forcewake_put(&dev_priv->uncore, FORCEWAKE_ALL);
+ intel_uncore_forcewake_put(uncore, FORCEWAKE_ALL);

- intel_engines_set_scheduler_caps(dev_priv);
return 0;

cleanup_uc:
- intel_uc_fini_hw(dev_priv);
+ intel_uc_fini_hw(i915);
out:
- intel_uncore_forcewake_put(&dev_priv->uncore, FORCEWAKE_ALL);
+ intel_uncore_forcewake_put(uncore, FORCEWAKE_ALL);
+
+ return ret;
+}
+
+int i915_gem_init_hw(struct drm_i915_private *i915)
+{
+ int ret;
+
+ BUG_ON(!i915->kernel_context);
+ ret = i915_terminally_wedged(i915);
+ if (ret)
+ return ret;
+
+ ret = init_hw(&i915->gt);
+
+ intel_engines_set_scheduler_caps(i915);

return ret;
}
--
2.20.1