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drm/i915/display: handle migration for dpt

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On platforms like DG2, it looks like the dpt path here is missing the
migrate-to-lmem step on discrete platforms.

v2:
  - Move the vma_pin() under the for_i915_gem_ww(), otherwise the
    object can be moved after dropping the lock and then doing the pin.

Fixes: 33e7a975103c ("drm/i915/xelpd: First stab at DPT support")
Signed-off-by: Matthew Auld <matthew.auld@intel.com>
Cc: Jianshui Yu <jianshui.yu@intel.com>
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Cc: Nirmoy Das <nirmoy.das@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20221004131916.233474-2-matthew.auld@intel.com
This commit is contained in:
Matthew Auld 2022-10-04 14:19:13 +01:00
parent 3bce981f58
commit 5769f64ff0
1 changed files with 35 additions and 20 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

55
drivers/gpu/drm/i915/display/intel_fb_pin.c
View File

@ -26,10 +26,17 @@ intel_pin_fb_obj_dpt(struct drm_framebuffer *fb,
struct drm_device *dev = fb->dev;
struct drm_i915_private *dev_priv = to_i915(dev);
struct drm_i915_gem_object *obj = intel_fb_obj(fb);
struct i915_gem_ww_ctx ww;
struct i915_vma *vma;
u32 alignment;
int ret;
/*
* We are not syncing against the binding (and potential migrations)
* below, so this vm must never be async.
*/
GEM_WARN_ON(vm->bind_async_flags);
if (WARN_ON(!i915_gem_object_is_framebuffer(obj)))
return ERR_PTR(-EINVAL);
@ -37,29 +44,37 @@ intel_pin_fb_obj_dpt(struct drm_framebuffer *fb,
atomic_inc(&dev_priv->gpu_error.pending_fb_pin);
ret = i915_gem_object_lock_interruptible(obj, NULL);
if (!ret) {
ret = i915_gem_object_set_cache_level(obj, I915_CACHE_NONE);
i915_gem_object_unlock(obj);
}
if (ret) {
vma = ERR_PTR(ret);
goto err;
}
for_i915_gem_ww(&ww, ret, true) {
ret = i915_gem_object_lock(obj, &ww);
if (ret)
continue;
vma = i915_vma_instance(obj, vm, view);
if (IS_ERR(vma))
goto err;
if (i915_vma_misplaced(vma, 0, alignment, 0)) {
ret = i915_vma_unbind_unlocked(vma);
if (ret) {
vma = ERR_PTR(ret);
goto err;
if (HAS_LMEM(dev_priv)) {
ret = i915_gem_object_migrate(obj, &ww, INTEL_REGION_LMEM_0);
if (ret)
continue;
}
}
ret = i915_vma_pin(vma, 0, alignment, PIN_GLOBAL);
ret = i915_gem_object_set_cache_level(obj, I915_CACHE_NONE);
if (ret)
continue;
vma = i915_vma_instance(obj, vm, view);
if (IS_ERR(vma)) {
ret = PTR_ERR(vma);
continue;
}
if (i915_vma_misplaced(vma, 0, alignment, 0)) {
ret = i915_vma_unbind(vma);
if (ret)
continue;
}
ret = i915_vma_pin_ww(vma, &ww, 0, alignment, PIN_GLOBAL);
if (ret)
continue;
}
if (ret) {
vma = ERR_PTR(ret);
goto err;