Re: [PATCH v7 05/16] drm/amdgpu: Handle IOMMU enabled case.

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Andrey

On 2021-05-12 10:26 a.m., Andrey Grodzovsky wrote:
Handle all DMA IOMMU gropup related dependencies before the
group is removed.

v5: Drop IOMMU notifier and switch to lockless call to ttm_tt_unpopulate
v6: Drop the BO unamp list
v7:
Drop amdgpu_gart_fini
In amdgpu_ih_ring_fini do uncinditional  check (!ih->ring)
to avoid freeing uniniitalized rings.
Call amdgpu_ih_ring_fini unconditionally.

Signed-off-by: Andrey Grodzovsky <andrey.grodzovsky@xxxxxxx>
---
  drivers/gpu/drm/amd/amdgpu/amdgpu_device.c |  4 ++--
  drivers/gpu/drm/amd/amdgpu/amdgpu_gart.c   | 14 +-------------
  drivers/gpu/drm/amd/amdgpu/amdgpu_gart.h   |  2 +-
  drivers/gpu/drm/amd/amdgpu/amdgpu_ih.c     |  6 ++++--
  drivers/gpu/drm/amd/amdgpu/amdgpu_irq.c    |  5 +++++
  drivers/gpu/drm/amd/amdgpu/cik_ih.c        |  1 -
  drivers/gpu/drm/amd/amdgpu/cz_ih.c         |  1 -
  drivers/gpu/drm/amd/amdgpu/gmc_v10_0.c     |  1 -
  drivers/gpu/drm/amd/amdgpu/gmc_v6_0.c      |  1 -
  drivers/gpu/drm/amd/amdgpu/gmc_v7_0.c      |  1 -
  drivers/gpu/drm/amd/amdgpu/gmc_v8_0.c      |  1 -
  drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c      |  1 -
  drivers/gpu/drm/amd/amdgpu/iceland_ih.c    |  1 -
  drivers/gpu/drm/amd/amdgpu/navi10_ih.c     |  4 ----
  drivers/gpu/drm/amd/amdgpu/si_ih.c         |  1 -
  drivers/gpu/drm/amd/amdgpu/tonga_ih.c      |  1 -
  drivers/gpu/drm/amd/amdgpu/vega10_ih.c     |  4 ----
  drivers/gpu/drm/amd/amdgpu/vega20_ih.c     |  4 ----
  18 files changed, 13 insertions(+), 40 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
index 18598eda18f6..a0bff4713672 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
@@ -3256,7 +3256,6 @@ static const struct attribute *amdgpu_dev_attributes[] = {
  	NULL
  };
-
  /**
   * amdgpu_device_init - initialize the driver
   *
@@ -3698,12 +3697,13 @@ void amdgpu_device_fini_hw(struct amdgpu_device *adev)
  		amdgpu_ucode_sysfs_fini(adev);
  	sysfs_remove_files(&adev->dev->kobj, amdgpu_dev_attributes);
-
  	amdgpu_fbdev_fini(adev);
amdgpu_irq_fini_hw(adev); amdgpu_device_ip_fini_early(adev);
+
+	amdgpu_gart_dummy_page_fini(adev);
  }
void amdgpu_device_fini_sw(struct amdgpu_device *adev)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_gart.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_gart.c
index c5a9a4fb10d2..6460cf723f0a 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_gart.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_gart.c
@@ -92,7 +92,7 @@ static int amdgpu_gart_dummy_page_init(struct amdgpu_device *adev)
   *
   * Frees the dummy page used by the driver (all asics).
   */
-static void amdgpu_gart_dummy_page_fini(struct amdgpu_device *adev)
+void amdgpu_gart_dummy_page_fini(struct amdgpu_device *adev)
  {
  	if (!adev->dummy_page_addr)
  		return;
@@ -365,15 +365,3 @@ int amdgpu_gart_init(struct amdgpu_device *adev)
return 0;
  }
-
-/**
- * amdgpu_gart_fini - tear down the driver info for managing the gart
- *
- * @adev: amdgpu_device pointer
- *
- * Tear down the gart driver info and free the dummy page (all asics).
- */
-void amdgpu_gart_fini(struct amdgpu_device *adev)
-{
-	amdgpu_gart_dummy_page_fini(adev);
-}
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_gart.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_gart.h
index a25fe97b0196..030b9d4c736a 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_gart.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_gart.h
@@ -57,7 +57,7 @@ void amdgpu_gart_table_vram_free(struct amdgpu_device *adev);
  int amdgpu_gart_table_vram_pin(struct amdgpu_device *adev);
  void amdgpu_gart_table_vram_unpin(struct amdgpu_device *adev);
  int amdgpu_gart_init(struct amdgpu_device *adev);
-void amdgpu_gart_fini(struct amdgpu_device *adev);
+void amdgpu_gart_dummy_page_fini(struct amdgpu_device *adev);
  int amdgpu_gart_unbind(struct amdgpu_device *adev, uint64_t offset,
  		       int pages);
  int amdgpu_gart_map(struct amdgpu_device *adev, uint64_t offset,
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ih.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ih.c
index faaa6aa2faaf..433469ace6f4 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ih.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ih.c
@@ -115,9 +115,11 @@ int amdgpu_ih_ring_init(struct amdgpu_device *adev, struct amdgpu_ih_ring *ih,
   */
  void amdgpu_ih_ring_fini(struct amdgpu_device *adev, struct amdgpu_ih_ring *ih)
  {
+
+	if (!ih->ring)
+		return;
+
  	if (ih->use_bus_addr) {
-		if (!ih->ring)
-			return;
/* add 8 bytes for the rptr/wptr shadows and
  		 * add them to the end of the ring allocation.
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_irq.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_irq.c
index 233b64dab94b..32ce0e679dc7 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_irq.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_irq.c
@@ -361,6 +361,11 @@ void amdgpu_irq_fini_hw(struct amdgpu_device *adev)
  		if (!amdgpu_device_has_dc_support(adev))
  			flush_work(&adev->hotplug_work);
  	}
+
+	amdgpu_ih_ring_fini(adev, &adev->irq.ih_soft);
+	amdgpu_ih_ring_fini(adev, &adev->irq.ih);
+	amdgpu_ih_ring_fini(adev, &adev->irq.ih1);
+	amdgpu_ih_ring_fini(adev, &adev->irq.ih2);
  }
/**
diff --git a/drivers/gpu/drm/amd/amdgpu/cik_ih.c b/drivers/gpu/drm/amd/amdgpu/cik_ih.c
index 183d44a6583c..df385ffc9768 100644
--- a/drivers/gpu/drm/amd/amdgpu/cik_ih.c
+++ b/drivers/gpu/drm/amd/amdgpu/cik_ih.c
@@ -310,7 +310,6 @@ static int cik_ih_sw_fini(void *handle)
  	struct amdgpu_device *adev = (struct amdgpu_device *)handle;
amdgpu_irq_fini_sw(adev);
-	amdgpu_ih_ring_fini(adev, &adev->irq.ih);
  	amdgpu_irq_remove_domain(adev);
return 0;
diff --git a/drivers/gpu/drm/amd/amdgpu/cz_ih.c b/drivers/gpu/drm/amd/amdgpu/cz_ih.c
index d32743949003..b8c47e0cf37a 100644
--- a/drivers/gpu/drm/amd/amdgpu/cz_ih.c
+++ b/drivers/gpu/drm/amd/amdgpu/cz_ih.c
@@ -302,7 +302,6 @@ static int cz_ih_sw_fini(void *handle)
  	struct amdgpu_device *adev = (struct amdgpu_device *)handle;
amdgpu_irq_fini_sw(adev);
-	amdgpu_ih_ring_fini(adev, &adev->irq.ih);
  	amdgpu_irq_remove_domain(adev);
return 0;
diff --git a/drivers/gpu/drm/amd/amdgpu/gmc_v10_0.c b/drivers/gpu/drm/amd/amdgpu/gmc_v10_0.c
index 2bfd620576f2..5e8bfcdd422e 100644
--- a/drivers/gpu/drm/amd/amdgpu/gmc_v10_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gmc_v10_0.c
@@ -954,7 +954,6 @@ static int gmc_v10_0_sw_init(void *handle)
  static void gmc_v10_0_gart_fini(struct amdgpu_device *adev)
  {
  	amdgpu_gart_table_vram_free(adev);
-	amdgpu_gart_fini(adev);
  }
static int gmc_v10_0_sw_fini(void *handle)
diff --git a/drivers/gpu/drm/amd/amdgpu/gmc_v6_0.c b/drivers/gpu/drm/amd/amdgpu/gmc_v6_0.c
index 405d6ad09022..0e81e03e9b49 100644
--- a/drivers/gpu/drm/amd/amdgpu/gmc_v6_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gmc_v6_0.c
@@ -898,7 +898,6 @@ static int gmc_v6_0_sw_fini(void *handle)
  	amdgpu_vm_manager_fini(adev);
  	amdgpu_gart_table_vram_free(adev);
  	amdgpu_bo_fini(adev);
-	amdgpu_gart_fini(adev);
  	release_firmware(adev->gmc.fw);
  	adev->gmc.fw = NULL;
diff --git a/drivers/gpu/drm/amd/amdgpu/gmc_v7_0.c b/drivers/gpu/drm/amd/amdgpu/gmc_v7_0.c
index 210ada2289ec..0795ea736573 100644
--- a/drivers/gpu/drm/amd/amdgpu/gmc_v7_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gmc_v7_0.c
@@ -1085,7 +1085,6 @@ static int gmc_v7_0_sw_fini(void *handle)
  	kfree(adev->gmc.vm_fault_info);
  	amdgpu_gart_table_vram_free(adev);
  	amdgpu_bo_fini(adev);
-	amdgpu_gart_fini(adev);
  	release_firmware(adev->gmc.fw);
  	adev->gmc.fw = NULL;
diff --git a/drivers/gpu/drm/amd/amdgpu/gmc_v8_0.c b/drivers/gpu/drm/amd/amdgpu/gmc_v8_0.c
index c1bd190841f8..dbf2e5472069 100644
--- a/drivers/gpu/drm/amd/amdgpu/gmc_v8_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gmc_v8_0.c
@@ -1194,7 +1194,6 @@ static int gmc_v8_0_sw_fini(void *handle)
  	kfree(adev->gmc.vm_fault_info);
  	amdgpu_gart_table_vram_free(adev);
  	amdgpu_bo_fini(adev);
-	amdgpu_gart_fini(adev);
  	release_firmware(adev->gmc.fw);
  	adev->gmc.fw = NULL;
diff --git a/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c b/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c
index c82d82da2c73..5ed0adae05cf 100644
--- a/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c
@@ -1601,7 +1601,6 @@ static int gmc_v9_0_sw_fini(void *handle)
  	amdgpu_gart_table_vram_free(adev);
  	amdgpu_bo_unref(&adev->gmc.pdb0_bo);
  	amdgpu_bo_fini(adev);
-	amdgpu_gart_fini(adev);
return 0;
  }
diff --git a/drivers/gpu/drm/amd/amdgpu/iceland_ih.c b/drivers/gpu/drm/amd/amdgpu/iceland_ih.c
index da96c6013477..ddfe4eaeea05 100644
--- a/drivers/gpu/drm/amd/amdgpu/iceland_ih.c
+++ b/drivers/gpu/drm/amd/amdgpu/iceland_ih.c
@@ -301,7 +301,6 @@ static int iceland_ih_sw_fini(void *handle)
  	struct amdgpu_device *adev = (struct amdgpu_device *)handle;
amdgpu_irq_fini_sw(adev);
-	amdgpu_ih_ring_fini(adev, &adev->irq.ih);
  	amdgpu_irq_remove_domain(adev);
return 0;
diff --git a/drivers/gpu/drm/amd/amdgpu/navi10_ih.c b/drivers/gpu/drm/amd/amdgpu/navi10_ih.c
index 5eea4550b856..941d464a2b47 100644
--- a/drivers/gpu/drm/amd/amdgpu/navi10_ih.c
+++ b/drivers/gpu/drm/amd/amdgpu/navi10_ih.c
@@ -570,10 +570,6 @@ static int navi10_ih_sw_fini(void *handle)
  	struct amdgpu_device *adev = (struct amdgpu_device *)handle;
amdgpu_irq_fini_sw(adev);
-	amdgpu_ih_ring_fini(adev, &adev->irq.ih_soft);
-	amdgpu_ih_ring_fini(adev, &adev->irq.ih2);
-	amdgpu_ih_ring_fini(adev, &adev->irq.ih1);
-	amdgpu_ih_ring_fini(adev, &adev->irq.ih);
return 0;
  }
diff --git a/drivers/gpu/drm/amd/amdgpu/si_ih.c b/drivers/gpu/drm/amd/amdgpu/si_ih.c
index 751307f3252c..9a24f17a5750 100644
--- a/drivers/gpu/drm/amd/amdgpu/si_ih.c
+++ b/drivers/gpu/drm/amd/amdgpu/si_ih.c
@@ -176,7 +176,6 @@ static int si_ih_sw_fini(void *handle)
  	struct amdgpu_device *adev = (struct amdgpu_device *)handle;
amdgpu_irq_fini_sw(adev);
-	amdgpu_ih_ring_fini(adev, &adev->irq.ih);
return 0;
  }
diff --git a/drivers/gpu/drm/amd/amdgpu/tonga_ih.c b/drivers/gpu/drm/amd/amdgpu/tonga_ih.c
index 973d80ec7f6c..b08905d1c00f 100644
--- a/drivers/gpu/drm/amd/amdgpu/tonga_ih.c
+++ b/drivers/gpu/drm/amd/amdgpu/tonga_ih.c
@@ -313,7 +313,6 @@ static int tonga_ih_sw_fini(void *handle)
  	struct amdgpu_device *adev = (struct amdgpu_device *)handle;
amdgpu_irq_fini_sw(adev);
-	amdgpu_ih_ring_fini(adev, &adev->irq.ih);
  	amdgpu_irq_remove_domain(adev);
return 0;
diff --git a/drivers/gpu/drm/amd/amdgpu/vega10_ih.c b/drivers/gpu/drm/amd/amdgpu/vega10_ih.c
index dead9c2fbd4c..32ec4b8e806a 100644
--- a/drivers/gpu/drm/amd/amdgpu/vega10_ih.c
+++ b/drivers/gpu/drm/amd/amdgpu/vega10_ih.c
@@ -514,10 +514,6 @@ static int vega10_ih_sw_fini(void *handle)
  	struct amdgpu_device *adev = (struct amdgpu_device *)handle;
amdgpu_irq_fini_sw(adev);
-	amdgpu_ih_ring_fini(adev, &adev->irq.ih_soft);
-	amdgpu_ih_ring_fini(adev, &adev->irq.ih2);
-	amdgpu_ih_ring_fini(adev, &adev->irq.ih1);
-	amdgpu_ih_ring_fini(adev, &adev->irq.ih);
return 0;
  }
diff --git a/drivers/gpu/drm/amd/amdgpu/vega20_ih.c b/drivers/gpu/drm/amd/amdgpu/vega20_ih.c
index 58993ae1fe11..f51dfc38ac65 100644
--- a/drivers/gpu/drm/amd/amdgpu/vega20_ih.c
+++ b/drivers/gpu/drm/amd/amdgpu/vega20_ih.c
@@ -566,10 +566,6 @@ static int vega20_ih_sw_fini(void *handle)
  	struct amdgpu_device *adev = (struct amdgpu_device *)handle;
amdgpu_irq_fini_sw(adev);
-	amdgpu_ih_ring_fini(adev, &adev->irq.ih_soft);
-	amdgpu_ih_ring_fini(adev, &adev->irq.ih2);
-	amdgpu_ih_ring_fini(adev, &adev->irq.ih1);
-	amdgpu_ih_ring_fini(adev, &adev->irq.ih);
return 0;
  }

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