From: Mukul Joshi <[email protected]> Create a drm client for storing the GEM handles corresponding to NPA BOs. We always want to keep one GEM handle alive for the NPA BOs during the lifetime of the BO.
Signed-off-by: Mukul Joshi <[email protected]> Reviewed-by: Felix Kuehling <[email protected]> Signed-off-by: Alex Deucher <[email protected]> --- drivers/gpu/drm/amd/amdgpu/amdgpu_ualink.c | 28 ++++++++++++++++++++++ drivers/gpu/drm/amd/amdgpu/amdgpu_ualink.h | 3 +++ 2 files changed, 31 insertions(+) diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ualink.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ualink.c index d424c71905ff2..51078e83e3e1a 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ualink.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ualink.c @@ -31,6 +31,27 @@ #include <linux/sysfs.h> #include <linux/string.h> +static const struct drm_client_funcs ualink_client_funcs = { + .unregister = drm_client_release, +}; + +static int amdgpu_ualink_drm_client_create(struct amdgpu_device *adev) +{ + int ret; + + ret = drm_client_init(&adev->ddev, &adev->ualink.client, "ualink", + &ualink_client_funcs); + if (ret) { + dev_err(adev->dev, "Failed to init UALink DRM client: %d\n", + ret); + return ret; + } + + drm_client_register(&adev->ualink.client); + + return 0; +} + int amdgpu_ualink_init(struct amdgpu_device *adev) { int r; @@ -62,6 +83,13 @@ int amdgpu_ualink_init(struct amdgpu_device *adev) return r; } + r = amdgpu_ualink_drm_client_create(adev); + if (r) { + dev_err(adev->dev, "Failed to create UALink DRM client: %d\n", + r); + return r; + } + r = amdgpu_ualink_init_interrupt(adev); if (r) { dev_err(adev->dev, diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ualink.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_ualink.h index 3fde1b80c3e92..cb971ac8bdd9e 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ualink.h +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ualink.h @@ -186,6 +186,9 @@ struct amdgpu_ualink_mgr { /* NPA-VM used on the exporter.*/ struct amdgpu_vm npa_vm; + /* DRM client for UALink to manage GEM handles for NPA BOs */ + struct drm_client_dev client; + /* Sequence number to track the need for TLB flushes */ atomic64_t last_flushed_tlb_seq; }; -- 2.55.0
