From: Maarten Lankhorst maarten.lankhorst@linux.intel.com
Try to pin to ggtt first, and use a full ww loop to handle eviction correctly.
Signed-off-by: Maarten Lankhorst maarten.lankhorst@linux.intel.com Cc: Thomas Hellström thomas.hellstrom@linux.intel.com --- drivers/gpu/drm/i915/gt/intel_engine_cs.c | 37 +++++++++++++++-------- 1 file changed, 24 insertions(+), 13 deletions(-)
diff --git a/drivers/gpu/drm/i915/gt/intel_engine_cs.c b/drivers/gpu/drm/i915/gt/intel_engine_cs.c index 97ceaf7116e8..420c6a35f3ed 100644 --- a/drivers/gpu/drm/i915/gt/intel_engine_cs.c +++ b/drivers/gpu/drm/i915/gt/intel_engine_cs.c @@ -618,6 +618,7 @@ static void cleanup_status_page(struct intel_engine_cs *engine) }
static int pin_ggtt_status_page(struct intel_engine_cs *engine, + struct i915_gem_ww_ctx *ww, struct i915_vma *vma) { unsigned int flags; @@ -638,12 +639,13 @@ static int pin_ggtt_status_page(struct intel_engine_cs *engine, else flags = PIN_HIGH;
- return i915_ggtt_pin(vma, NULL, 0, flags); + return i915_ggtt_pin(vma, ww, 0, flags); }
static int init_status_page(struct intel_engine_cs *engine) { struct drm_i915_gem_object *obj; + struct i915_gem_ww_ctx ww; struct i915_vma *vma; void *vaddr; int ret; @@ -667,30 +669,39 @@ static int init_status_page(struct intel_engine_cs *engine) vma = i915_vma_instance(obj, &engine->gt->ggtt->vm, NULL); if (IS_ERR(vma)) { ret = PTR_ERR(vma); - goto err; + goto err_put; }
+ i915_gem_ww_ctx_init(&ww, true); +retry: + ret = i915_gem_object_lock(obj, &ww); + if (!ret && !HWS_NEEDS_PHYSICAL(engine->i915)) + ret = pin_ggtt_status_page(engine, &ww, vma); + if (ret) + goto err; + vaddr = i915_gem_object_pin_map(obj, I915_MAP_WB); if (IS_ERR(vaddr)) { ret = PTR_ERR(vaddr); - goto err; + goto err_unpin; }
engine->status_page.addr = memset(vaddr, 0, PAGE_SIZE); engine->status_page.vma = vma;
- if (!HWS_NEEDS_PHYSICAL(engine->i915)) { - ret = pin_ggtt_status_page(engine, vma); - if (ret) - goto err_unpin; - } - - return 0; - err_unpin: - i915_gem_object_unpin_map(obj); + if (ret) + i915_vma_unpin(vma); err: - i915_gem_object_put(obj); + if (ret == -EDEADLK) { + ret = i915_gem_ww_ctx_backoff(&ww); + if (!ret) + goto retry; + } + i915_gem_ww_ctx_fini(&ww); +err_put: + if (ret) + i915_gem_object_put(obj); return ret; }