summaryrefslogtreecommitdiff
path: root/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.c
diff options
context:
space:
mode:
authorXiangliang Yu <Xiangliang.Yu@amd.com>2017-01-12 09:53:08 +0300
committerAlex Deucher <alexander.deucher@amd.com>2017-01-27 19:13:23 +0300
commit1e9f1392795e63f20d109b2ee6d44a7ffc99b7ab (patch)
treea45daaa4d53242ae4ce759d3a0e9c806074dae7d /drivers/gpu/drm/amd/amdgpu/amdgpu_virt.c
parentbc992ba5a3c19c79873fab46f17dcb20a9b84a85 (diff)
downloadlinux-1e9f1392795e63f20d109b2ee6d44a7ffc99b7ab.tar.xz
drm/amdgpu/virt: add high level interfaces for virt
Add high level interfaces that is not relate to specific asic. So asic files just need to implement the interfaces to support virtualization. Signed-off-by: Xiangliang Yu <Xiangliang.Yu@amd.com> Signed-off-by: Monk Liu <Monk.Liu@amd.com> Reviewed-by: Alex Deucher <alexander.deucher@amd.com> Reviewed-by: Christian König <christian.koenig@amd.com> Reviewed-by: Monk Liu <Monk.Liu@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_virt.c')
-rw-r--r--drivers/gpu/drm/amd/amdgpu/amdgpu_virt.c67
1 files changed, 67 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.c
index 00583baab132..6e63e7f3025c 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.c
@@ -149,3 +149,70 @@ void amdgpu_virt_kiq_wreg(struct amdgpu_device *adev, uint32_t reg, uint32_t v)
DRM_ERROR("wait for kiq fence error: %ld.\n", r);
dma_fence_put(f);
}
+
+/**
+ * amdgpu_virt_request_full_gpu() - request full gpu access
+ * @amdgpu: amdgpu device.
+ * @init: is driver init time.
+ * When start to init/fini driver, first need to request full gpu access.
+ * Return: Zero if request success, otherwise will return error.
+ */
+int amdgpu_virt_request_full_gpu(struct amdgpu_device *adev, bool init)
+{
+ struct amdgpu_virt *virt = &adev->virt;
+ int r;
+
+ if (virt->ops && virt->ops->req_full_gpu) {
+ r = virt->ops->req_full_gpu(adev, init);
+ if (r)
+ return r;
+
+ adev->virt.caps &= ~AMDGPU_SRIOV_CAPS_RUNTIME;
+ }
+
+ return 0;
+}
+
+/**
+ * amdgpu_virt_release_full_gpu() - release full gpu access
+ * @amdgpu: amdgpu device.
+ * @init: is driver init time.
+ * When finishing driver init/fini, need to release full gpu access.
+ * Return: Zero if release success, otherwise will returen error.
+ */
+int amdgpu_virt_release_full_gpu(struct amdgpu_device *adev, bool init)
+{
+ struct amdgpu_virt *virt = &adev->virt;
+ int r;
+
+ if (virt->ops && virt->ops->rel_full_gpu) {
+ r = virt->ops->rel_full_gpu(adev, init);
+ if (r)
+ return r;
+
+ adev->virt.caps |= AMDGPU_SRIOV_CAPS_RUNTIME;
+ }
+ return 0;
+}
+
+/**
+ * amdgpu_virt_reset_gpu() - reset gpu
+ * @amdgpu: amdgpu device.
+ * Send reset command to GPU hypervisor to reset GPU that VM is using
+ * Return: Zero if reset success, otherwise will return error.
+ */
+int amdgpu_virt_reset_gpu(struct amdgpu_device *adev)
+{
+ struct amdgpu_virt *virt = &adev->virt;
+ int r;
+
+ if (virt->ops && virt->ops->reset_gpu) {
+ r = virt->ops->reset_gpu(adev);
+ if (r)
+ return r;
+
+ adev->virt.caps &= ~AMDGPU_SRIOV_CAPS_RUNTIME;
+ }
+
+ return 0;
+}