[PATCH] drm/amdgpu: Enable doorbell selfring after resize FB BAR
Shane Xiao
shane.xiao at amd.com
Tue Apr 25 14:54:44 UTC 2023
[Why]
The selfring doorbell aperture will change when resize FB
BAR successfully during gmc sw init, we should reorder
the sequence of enabling doorbell selfring aperture.
[How]
Move enable_doorbell_selfring_aperture from *_common_hw_init
to *_common_late_init.
This fixes the potential issue that GPU ring its own
doorbell when this device is in translated mode when
iommu is on.
v2: Remove *_enable_doorbell_aperture functions (Christian)
v3: Add comments to note that why we need enable doorbell
selfring late (Christian)
Signed-off-by: Shane Xiao <shane.xiao at amd.com>
Signed-off-by: Aaron Liu <aaron.liu at amd.com>
Tested-by: Xiaomeng Hou <Xiaomeng.Hou at amd.com>
---
drivers/gpu/drm/amd/amdgpu/nv.c | 23 +++++++++++++----------
drivers/gpu/drm/amd/amdgpu/soc15.c | 25 +++++++++++++++----------
drivers/gpu/drm/amd/amdgpu/soc21.c | 23 +++++++++++++----------
3 files changed, 41 insertions(+), 30 deletions(-)
diff --git a/drivers/gpu/drm/amd/amdgpu/nv.c b/drivers/gpu/drm/amd/amdgpu/nv.c
index dabeeab2f2ad..3cc068974bcd 100644
--- a/drivers/gpu/drm/amd/amdgpu/nv.c
+++ b/drivers/gpu/drm/amd/amdgpu/nv.c
@@ -531,13 +531,6 @@ static void nv_program_aspm(struct amdgpu_device *adev)
}
-static void nv_enable_doorbell_aperture(struct amdgpu_device *adev,
- bool enable)
-{
- adev->nbio.funcs->enable_doorbell_aperture(adev, enable);
- adev->nbio.funcs->enable_doorbell_selfring_aperture(adev, enable);
-}
-
const struct amdgpu_ip_block_version nv_common_ip_block =
{
.type = AMD_IP_BLOCK_TYPE_COMMON,
@@ -999,6 +992,11 @@ static int nv_common_late_init(void *handle)
}
}
+ /* Enable selfring doorbell aperture late because doorbell BAR
+ * aperture will change if resize BAR successfully in gmc sw_init.
+ */
+ adev->nbio.funcs->enable_doorbell_selfring_aperture(adev, true);
+
return 0;
}
@@ -1038,7 +1036,7 @@ static int nv_common_hw_init(void *handle)
if (adev->nbio.funcs->remap_hdp_registers && !amdgpu_sriov_vf(adev))
adev->nbio.funcs->remap_hdp_registers(adev);
/* enable the doorbell aperture */
- nv_enable_doorbell_aperture(adev, true);
+ adev->nbio.funcs->enable_doorbell_aperture(adev, true);
return 0;
}
@@ -1047,8 +1045,13 @@ static int nv_common_hw_fini(void *handle)
{
struct amdgpu_device *adev = (struct amdgpu_device *)handle;
- /* disable the doorbell aperture */
- nv_enable_doorbell_aperture(adev, false);
+ /* Disable the doorbell aperture and selfring doorbell aperture
+ * separately in hw_fini because nv_enable_doorbell_aperture
+ * has been removed and there is no need to delay disabling
+ * selfring doorbell.
+ */
+ adev->nbio.funcs->enable_doorbell_aperture(adev, false);
+ adev->nbio.funcs->enable_doorbell_selfring_aperture(adev, false);
return 0;
}
diff --git a/drivers/gpu/drm/amd/amdgpu/soc15.c b/drivers/gpu/drm/amd/amdgpu/soc15.c
index 4d1487a9836c..3221522e71e8 100644
--- a/drivers/gpu/drm/amd/amdgpu/soc15.c
+++ b/drivers/gpu/drm/amd/amdgpu/soc15.c
@@ -619,13 +619,6 @@ static void soc15_program_aspm(struct amdgpu_device *adev)
adev->nbio.funcs->program_aspm(adev);
}
-static void soc15_enable_doorbell_aperture(struct amdgpu_device *adev,
- bool enable)
-{
- adev->nbio.funcs->enable_doorbell_aperture(adev, enable);
- adev->nbio.funcs->enable_doorbell_selfring_aperture(adev, enable);
-}
-
const struct amdgpu_ip_block_version vega10_common_ip_block =
{
.type = AMD_IP_BLOCK_TYPE_COMMON,
@@ -1125,6 +1118,11 @@ static int soc15_common_late_init(void *handle)
if (amdgpu_sriov_vf(adev))
xgpu_ai_mailbox_get_irq(adev);
+ /* Enable selfring doorbell aperture late because doorbell BAR
+ * aperture will change if resize BAR successfully in gmc sw_init.
+ */
+ adev->nbio.funcs->enable_doorbell_selfring_aperture(adev, true);
+
return 0;
}
@@ -1182,7 +1180,8 @@ static int soc15_common_hw_init(void *handle)
adev->nbio.funcs->remap_hdp_registers(adev);
/* enable the doorbell aperture */
- soc15_enable_doorbell_aperture(adev, true);
+ adev->nbio.funcs->enable_doorbell_aperture(adev, true);
+
/* HW doorbell routing policy: doorbell writing not
* in SDMA/IH/MM/ACV range will be routed to CP. So
* we need to init SDMA doorbell range prior
@@ -1198,8 +1197,14 @@ static int soc15_common_hw_fini(void *handle)
{
struct amdgpu_device *adev = (struct amdgpu_device *)handle;
- /* disable the doorbell aperture */
- soc15_enable_doorbell_aperture(adev, false);
+ /* Disable the doorbell aperture and selfring doorbell aperture
+ * separately in hw_fini because soc15_enable_doorbell_aperture
+ * has been removed and there is no need to delay disabling
+ * selfring doorbell.
+ */
+ adev->nbio.funcs->enable_doorbell_aperture(adev, false);
+ adev->nbio.funcs->enable_doorbell_selfring_aperture(adev, false);
+
if (amdgpu_sriov_vf(adev))
xgpu_ai_mailbox_put_irq(adev);
diff --git a/drivers/gpu/drm/amd/amdgpu/soc21.c b/drivers/gpu/drm/amd/amdgpu/soc21.c
index 7d59303ca2f9..0f82b8e83acb 100644
--- a/drivers/gpu/drm/amd/amdgpu/soc21.c
+++ b/drivers/gpu/drm/amd/amdgpu/soc21.c
@@ -450,13 +450,6 @@ static void soc21_program_aspm(struct amdgpu_device *adev)
adev->nbio.funcs->program_aspm(adev);
}
-static void soc21_enable_doorbell_aperture(struct amdgpu_device *adev,
- bool enable)
-{
- adev->nbio.funcs->enable_doorbell_aperture(adev, enable);
- adev->nbio.funcs->enable_doorbell_selfring_aperture(adev, enable);
-}
-
const struct amdgpu_ip_block_version soc21_common_ip_block =
{
.type = AMD_IP_BLOCK_TYPE_COMMON,
@@ -764,6 +757,11 @@ static int soc21_common_late_init(void *handle)
amdgpu_irq_get(adev, &adev->nbio.ras_err_event_athub_irq, 0);
}
+ /* Enable selfring doorbell aperture late because doorbell BAR
+ * aperture will change if resize BAR successfully in gmc sw_init.
+ */
+ adev->nbio.funcs->enable_doorbell_selfring_aperture(adev, true);
+
return 0;
}
@@ -797,7 +795,7 @@ static int soc21_common_hw_init(void *handle)
if (adev->nbio.funcs->remap_hdp_registers)
adev->nbio.funcs->remap_hdp_registers(adev);
/* enable the doorbell aperture */
- soc21_enable_doorbell_aperture(adev, true);
+ adev->nbio.funcs->enable_doorbell_aperture(adev, true);
return 0;
}
@@ -806,8 +804,13 @@ static int soc21_common_hw_fini(void *handle)
{
struct amdgpu_device *adev = (struct amdgpu_device *)handle;
- /* disable the doorbell aperture */
- soc21_enable_doorbell_aperture(adev, false);
+ /* Disable the doorbell aperture and selfring doorbell aperture
+ * separately in hw_fini because soc21_enable_doorbell_aperture
+ * has been removed and there is no need to delay disabling
+ * selfring doorbell.
+ */
+ adev->nbio.funcs->enable_doorbell_aperture(adev, false);
+ adev->nbio.funcs->enable_doorbell_selfring_aperture(adev, false);
if (amdgpu_sriov_vf(adev)) {
xgpu_nv_mailbox_put_irq(adev);
--
2.25.1
More information about the amd-gfx
mailing list