From 59c94b9d26dfee413238b012238837e7028e40cc Mon Sep 17 00:00:00 2001 From: Chris Wilson Date: Wed, 8 Jul 2020 18:37:46 +0100 Subject: [PATCH] drm/i915/gt: Replace opencoded i915_gem_object_pin_map() As we have a pin_map interface, that knows how to flush the data to the device, use it. The only downside is that we keep the kmap around, as once acquired we keep the mapping cached until the object's backing store is released. Signed-off-by: Chris Wilson Reviewed-by: Matthew Auld Link: https://patchwork.freedesktop.org/patch/msgid/20200708173748.32734-2-chris@chris-wilson.co.uk --- drivers/gpu/drm/i915/gt/intel_lrc.c | 11 +++++------ 1 file changed, 5 insertions(+), 6 deletions(-) diff --git a/drivers/gpu/drm/i915/gt/intel_lrc.c b/drivers/gpu/drm/i915/gt/intel_lrc.c index 9e28b2f9df720..890ad041ea5cc 100644 --- a/drivers/gpu/drm/i915/gt/intel_lrc.c +++ b/drivers/gpu/drm/i915/gt/intel_lrc.c @@ -3880,7 +3880,6 @@ static int intel_init_workaround_bb(struct intel_engine_cs *engine) struct i915_wa_ctx_bb *wa_bb[2] = { &wa_ctx->indirect_ctx, &wa_ctx->per_ctx }; wa_bb_func_t wa_bb_fn[2]; - struct page *page; void *batch, *batch_ptr; unsigned int i; int ret; @@ -3916,14 +3915,14 @@ static int intel_init_workaround_bb(struct intel_engine_cs *engine) return ret; } - page = i915_gem_object_get_dirty_page(wa_ctx->vma->obj, 0); - batch = batch_ptr = kmap_atomic(page); + batch = i915_gem_object_pin_map(wa_ctx->vma->obj, I915_MAP_WB); /* * Emit the two workaround batch buffers, recording the offset from the * start of the workaround batch buffer object for each and their * respective sizes. */ + batch_ptr = batch; for (i = 0; i < ARRAY_SIZE(wa_bb_fn); i++) { wa_bb[i]->offset = batch_ptr - batch; if (GEM_DEBUG_WARN_ON(!IS_ALIGNED(wa_bb[i]->offset, @@ -3935,10 +3934,10 @@ static int intel_init_workaround_bb(struct intel_engine_cs *engine) batch_ptr = wa_bb_fn[i](engine, batch_ptr); wa_bb[i]->size = batch_ptr - (batch + wa_bb[i]->offset); } + GEM_BUG_ON(batch_ptr - batch > CTX_WA_BB_OBJ_SIZE); - BUG_ON(batch_ptr - batch > CTX_WA_BB_OBJ_SIZE); - - kunmap_atomic(batch); + __i915_gem_object_flush_map(wa_ctx->vma->obj, 0, batch_ptr - batch); + i915_gem_object_unpin_map(wa_ctx->vma->obj); if (ret) lrc_destroy_wa_ctx(engine);