[PATCH 1/3] drm/amdgpu: add amdgpu_virt_get_vf_mode helper function
Kevin Wang
kevin1.wang at amd.com
Wed May 6 06:23:12 UTC 2020
the swsmu or powerplay(hwmgr) need to handle task according to different VF mode,
this function to help query vf mode.
vf mode:
1. SRIOV_VF_MODE_BARE_METAL: the driver work on host OS (PF)
2. SRIOV_VF_MODE_ONE_VF : the driver work on guest OS with one VF
3. SRIOV_VF_MODE_MULTI_VF : the driver work on guest OS with multi VF
Signed-off-by: Kevin Wang <kevin1.wang at amd.com>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_virt.c | 16 ++++++++++++++++
drivers/gpu/drm/amd/amdgpu/amdgpu_virt.h | 8 ++++++++
2 files changed, 24 insertions(+)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.c
index cbbb8d02535a..f3b38c9e04ca 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.c
@@ -370,3 +370,19 @@ void amdgpu_virt_disable_access_debugfs(struct amdgpu_device *adev)
if (amdgpu_sriov_vf(adev))
adev->virt.caps |= AMDGPU_SRIOV_CAPS_RUNTIME;
}
+
+enum amdgpu_sriov_vf_mode amdgpu_virt_get_sriov_vf_mode(struct amdgpu_device *adev)
+{
+ enum amdgpu_sriov_vf_mode mode;
+
+ if (amdgpu_sriov_vf(adev)) {
+ if (amdgpu_sriov_is_pp_one_vf(adev))
+ mode = SRIOV_VF_MODE_ONE_VF;
+ else
+ mode = SRIOV_VF_MODE_MULTI_VF;
+ } else {
+ mode = SRIOV_VF_MODE_BARE_METAL;
+ }
+
+ return mode;
+}
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.h
index de27308802c9..b90e822cebd7 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.h
@@ -35,6 +35,12 @@
/* tonga/fiji use this offset */
#define mmBIF_IOV_FUNC_IDENTIFIER 0x1503
+enum amdgpu_sriov_vf_mode {
+ SRIOV_VF_MODE_BARE_METAL = 0,
+ SRIOV_VF_MODE_ONE_VF,
+ SRIOV_VF_MODE_MULTI_VF,
+};
+
struct amdgpu_mm_table {
struct amdgpu_bo *bo;
uint32_t *cpu_addr;
@@ -323,4 +329,6 @@ void amdgpu_detect_virtualization(struct amdgpu_device *adev);
bool amdgpu_virt_can_access_debugfs(struct amdgpu_device *adev);
int amdgpu_virt_enable_access_debugfs(struct amdgpu_device *adev);
void amdgpu_virt_disable_access_debugfs(struct amdgpu_device *adev);
+
+enum amdgpu_sriov_vf_mode amdgpu_virt_get_sriov_vf_mode(struct amdgpu_device *adev);
#endif
--
2.17.1
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