From 1e9f1392795e63f20d109b2ee6d44a7ffc99b7ab Mon Sep 17 00:00:00 2001
From: Xiangliang Yu <Xiangliang.Yu@amd.com>
Date: Thu, 12 Jan 2017 14:53:08 +0800
Subject: drm/amdgpu/virt: add high level interfaces for virt
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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>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_virt.c | 67 ++++++++++++++++++++++++++++++++
1 file changed, 67 insertions(+)
(limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_virt.c')
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;
+}
--
cgit