Re: [PATCH] drm/i915: Use direction definition DMA_BIDIRECTIONAL instead of PCI_DMA_BIDIRECTIONAL

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Le 30/09/2021 à 16:21, Daniel Vetter a écrit :
On Sat, Sep 25, 2021 at 08:46:12PM +0800, Cai Huoqing wrote:
Replace direction definition PCI_DMA_BIDIRECTIONAL
with DMA_BIDIRECTIONAL, because it helps to enhance readability
and avoid possible inconsistency.

Signed-off-by: Cai Huoqing <caihuoqing@xxxxxxxxx>

Applied to drm-intel-gt-next, thanks for the patch.
-Daniel

Hi,
just in case, a similar patch received some (unrelated) comments a few weeks ago. See [1].

Should it rings some bells to someone who know who knows what should be done.

Just my 2c.

[1]: https://lore.kernel.org/kernel-janitors/0cd61d5b-ac88-31e8-99ad-143af480416f@xxxxxxx/

CJ



---
  drivers/gpu/drm/i915/gt/intel_region_lmem.c |  4 ++--
  drivers/gpu/drm/i915/gvt/gtt.c              | 17 ++++++++---------
  drivers/gpu/drm/i915/gvt/kvmgt.c            |  4 ++--
  drivers/gpu/drm/i915/i915_gem_gtt.c         |  4 ++--
  4 files changed, 14 insertions(+), 15 deletions(-)

diff --git a/drivers/gpu/drm/i915/gt/intel_region_lmem.c b/drivers/gpu/drm/i915/gt/intel_region_lmem.c
index a74b72f50cc9..afb35d2e5c73 100644
--- a/drivers/gpu/drm/i915/gt/intel_region_lmem.c
+++ b/drivers/gpu/drm/i915/gt/intel_region_lmem.c
@@ -32,7 +32,7 @@ static int init_fake_lmem_bar(struct intel_memory_region *mem)
  	mem->remap_addr = dma_map_resource(i915->drm.dev,
  					   mem->region.start,
  					   mem->fake_mappable.size,
-					   PCI_DMA_BIDIRECTIONAL,
+					   DMA_BIDIRECTIONAL,
  					   DMA_ATTR_FORCE_CONTIGUOUS);
  	if (dma_mapping_error(i915->drm.dev, mem->remap_addr)) {
  		drm_mm_remove_node(&mem->fake_mappable);
@@ -62,7 +62,7 @@ static void release_fake_lmem_bar(struct intel_memory_region *mem)
  	dma_unmap_resource(mem->i915->drm.dev,
  			   mem->remap_addr,
  			   mem->fake_mappable.size,
-			   PCI_DMA_BIDIRECTIONAL,
+			   DMA_BIDIRECTIONAL,
  			   DMA_ATTR_FORCE_CONTIGUOUS);
  }
diff --git a/drivers/gpu/drm/i915/gvt/gtt.c b/drivers/gpu/drm/i915/gvt/gtt.c
index e5c2fdfc20e3..53d0cb327539 100644
--- a/drivers/gpu/drm/i915/gvt/gtt.c
+++ b/drivers/gpu/drm/i915/gvt/gtt.c
@@ -745,7 +745,7 @@ static void ppgtt_free_spt(struct intel_vgpu_ppgtt_spt *spt)
  	trace_spt_free(spt->vgpu->id, spt, spt->guest_page.type);
dma_unmap_page(kdev, spt->shadow_page.mfn << I915_GTT_PAGE_SHIFT, 4096,
-		       PCI_DMA_BIDIRECTIONAL);
+		       DMA_BIDIRECTIONAL);
radix_tree_delete(&spt->vgpu->gtt.spt_tree, spt->shadow_page.mfn); @@ -849,7 +849,7 @@ static struct intel_vgpu_ppgtt_spt *ppgtt_alloc_spt(
  	 */
  	spt->shadow_page.type = type;
  	daddr = dma_map_page(kdev, spt->shadow_page.page,
-			     0, 4096, PCI_DMA_BIDIRECTIONAL);
+			     0, 4096, DMA_BIDIRECTIONAL);
  	if (dma_mapping_error(kdev, daddr)) {
  		gvt_vgpu_err("fail to map dma addr\n");
  		ret = -EINVAL;
@@ -865,7 +865,7 @@ static struct intel_vgpu_ppgtt_spt *ppgtt_alloc_spt(
  	return spt;
err_unmap_dma:
-	dma_unmap_page(kdev, daddr, PAGE_SIZE, PCI_DMA_BIDIRECTIONAL);
+	dma_unmap_page(kdev, daddr, PAGE_SIZE, DMA_BIDIRECTIONAL);
  err_free_spt:
  	free_spt(spt);
  	return ERR_PTR(ret);
@@ -2409,8 +2409,7 @@ static int alloc_scratch_pages(struct intel_vgpu *vgpu,
  		return -ENOMEM;
  	}
- daddr = dma_map_page(dev, virt_to_page(scratch_pt), 0,
-			4096, PCI_DMA_BIDIRECTIONAL);
+	daddr = dma_map_page(dev, virt_to_page(scratch_pt), 0, 4096, DMA_BIDIRECTIONAL);
  	if (dma_mapping_error(dev, daddr)) {
  		gvt_vgpu_err("fail to dmamap scratch_pt\n");
  		__free_page(virt_to_page(scratch_pt));
@@ -2461,7 +2460,7 @@ static int release_scratch_page_tree(struct intel_vgpu *vgpu)
  		if (vgpu->gtt.scratch_pt[i].page != NULL) {
  			daddr = (dma_addr_t)(vgpu->gtt.scratch_pt[i].page_mfn <<
  					I915_GTT_PAGE_SHIFT);
-			dma_unmap_page(dev, daddr, 4096, PCI_DMA_BIDIRECTIONAL);
+			dma_unmap_page(dev, daddr, 4096, DMA_BIDIRECTIONAL);
  			__free_page(vgpu->gtt.scratch_pt[i].page);
  			vgpu->gtt.scratch_pt[i].page = NULL;
  			vgpu->gtt.scratch_pt[i].page_mfn = 0;
@@ -2741,7 +2740,7 @@ int intel_gvt_init_gtt(struct intel_gvt *gvt)
  	}
daddr = dma_map_page(dev, virt_to_page(page), 0,
-			4096, PCI_DMA_BIDIRECTIONAL);
+			4096, DMA_BIDIRECTIONAL);
  	if (dma_mapping_error(dev, daddr)) {
  		gvt_err("fail to dmamap scratch ggtt page\n");
  		__free_page(virt_to_page(page));
@@ -2755,7 +2754,7 @@ int intel_gvt_init_gtt(struct intel_gvt *gvt)
  		ret = setup_spt_oos(gvt);
  		if (ret) {
  			gvt_err("fail to initialize SPT oos\n");
-			dma_unmap_page(dev, daddr, 4096, PCI_DMA_BIDIRECTIONAL);
+			dma_unmap_page(dev, daddr, 4096, DMA_BIDIRECTIONAL);
  			__free_page(gvt->gtt.scratch_page);
  			return ret;
  		}
@@ -2779,7 +2778,7 @@ void intel_gvt_clean_gtt(struct intel_gvt *gvt)
  	dma_addr_t daddr = (dma_addr_t)(gvt->gtt.scratch_mfn <<
  					I915_GTT_PAGE_SHIFT);
- dma_unmap_page(dev, daddr, 4096, PCI_DMA_BIDIRECTIONAL);
+	dma_unmap_page(dev, daddr, 4096, DMA_BIDIRECTIONAL);
__free_page(gvt->gtt.scratch_page); diff --git a/drivers/gpu/drm/i915/gvt/kvmgt.c b/drivers/gpu/drm/i915/gvt/kvmgt.c
index 7efa386449d1..20b82fb036f8 100644
--- a/drivers/gpu/drm/i915/gvt/kvmgt.c
+++ b/drivers/gpu/drm/i915/gvt/kvmgt.c
@@ -328,7 +328,7 @@ static int gvt_dma_map_page(struct intel_vgpu *vgpu, unsigned long gfn,
  		return ret;
/* Setup DMA mapping. */
-	*dma_addr = dma_map_page(dev, page, 0, size, PCI_DMA_BIDIRECTIONAL);
+	*dma_addr = dma_map_page(dev, page, 0, size, DMA_BIDIRECTIONAL);
  	if (dma_mapping_error(dev, *dma_addr)) {
  		gvt_vgpu_err("DMA mapping failed for pfn 0x%lx, ret %d\n",
  			     page_to_pfn(page), ret);
@@ -344,7 +344,7 @@ static void gvt_dma_unmap_page(struct intel_vgpu *vgpu, unsigned long gfn,
  {
  	struct device *dev = vgpu->gvt->gt->i915->drm.dev;
- dma_unmap_page(dev, dma_addr, size, PCI_DMA_BIDIRECTIONAL);
+	dma_unmap_page(dev, dma_addr, size, DMA_BIDIRECTIONAL);
  	gvt_unpin_guest_page(vgpu, gfn, size);
  }
diff --git a/drivers/gpu/drm/i915/i915_gem_gtt.c b/drivers/gpu/drm/i915/i915_gem_gtt.c
index 36489be4896b..cd5f2348a187 100644
--- a/drivers/gpu/drm/i915/i915_gem_gtt.c
+++ b/drivers/gpu/drm/i915/i915_gem_gtt.c
@@ -30,7 +30,7 @@ int i915_gem_gtt_prepare_pages(struct drm_i915_gem_object *obj,
  	do {
  		if (dma_map_sg_attrs(obj->base.dev->dev,
  				     pages->sgl, pages->nents,
-				     PCI_DMA_BIDIRECTIONAL,
+				     DMA_BIDIRECTIONAL,
  				     DMA_ATTR_SKIP_CPU_SYNC |
  				     DMA_ATTR_NO_KERNEL_MAPPING |
  				     DMA_ATTR_NO_WARN))
@@ -64,7 +64,7 @@ void i915_gem_gtt_finish_pages(struct drm_i915_gem_object *obj,
  		usleep_range(100, 250);
dma_unmap_sg(i915->drm.dev, pages->sgl, pages->nents,
-		     PCI_DMA_BIDIRECTIONAL);
+		     DMA_BIDIRECTIONAL);
  }
/**
--
2.25.1






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