From be3800f57c3b0fb39dc732345279db76a50559a3 Mon Sep 17 00:00:00 2001
From: James Zhu <James.Zhu@amd.com>
Date: Tue, 28 Feb 2023 14:16:38 -0500
Subject: [PATCH] drm/amdgpu: find partition ID when open device
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
Find partition ID when open device from render device minor.
Signed-off-by: Christian König <christian.koenig@amd.com>
Signed-off-by: James Zhu <James.Zhu@amd.com>
Reviewed-and-tested-by: Philip Yang<Philip.Yang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
---
drivers/gpu/drm/amd/amdgpu/amdgpu.h | 2 ++
drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c | 4 ++++
drivers/gpu/drm/amd/amdgpu/amdgpu_xcp.c | 29 +++++++++++++++++++++++++
drivers/gpu/drm/amd/amdgpu/amdgpu_xcp.h | 3 +++
4 files changed, 38 insertions(+)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu.h b/drivers/gpu/drm/amd/amdgpu/amdgpu.h
index eb2fb968e3af5..bba8cfeff71f0 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu.h
@@ -467,6 +467,8 @@ struct amdgpu_fpriv {
struct mutex bo_list_lock;
struct idr bo_list_handles;
struct amdgpu_ctx_mgr ctx_mgr;
+ /** GPU partition selection */
+ uint32_t xcp_id;
};
int amdgpu_file_to_fpriv(struct file *filp, struct amdgpu_fpriv **fpriv);
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c
index 44997c7ee89d2..879718598fa4c 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c
@@ -1223,6 +1223,10 @@ int amdgpu_driver_open_kms(struct drm_device *dev, struct drm_file *file_priv)
goto out_suspend;
}
+ r = amdgpu_xcp_open_device(adev, fpriv, file_priv);
+ if (r)
+ return r;
+
pasid = amdgpu_pasid_alloc(16);
if (pasid < 0) {
dev_warn(adev->dev, "No more PASIDs available!");
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_xcp.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_xcp.c
index 8b28b18e42915..9b627a8b1d5c4 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_xcp.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_xcp.c
@@ -335,3 +335,32 @@ void amdgpu_xcp_dev_unplug(struct amdgpu_device *adev)
drm_dev_unplug(adev->xcp_mgr->xcp[i].ddev);
}
+int amdgpu_xcp_open_device(struct amdgpu_device *adev,
+ struct amdgpu_fpriv *fpriv,
+ struct drm_file *file_priv)
+{
+ int i;
+
+ if (!adev->xcp_mgr)
+ return 0;
+
+ fpriv->xcp_id = ~0;
+ for (i = 0; i < MAX_XCP; ++i) {
+ if (!adev->xcp_mgr->xcp[i].ddev)
+ break;
+
+ if (file_priv->minor == adev->xcp_mgr->xcp[i].ddev->render) {
+ if (adev->xcp_mgr->xcp[i].valid == FALSE) {
+ dev_err(adev->dev, "renderD%d partition %d not valid!",
+ file_priv->minor->index, i);
+ return -ENOENT;
+ }
+ dev_dbg(adev->dev, "renderD%d partition %d openned!",
+ file_priv->minor->index, i);
+ fpriv->xcp_id = i;
+ break;
+ }
+ }
+ return 0;
+}
+
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_xcp.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_xcp.h
index dad0b98d1ae7c..ad60520f952cf 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_xcp.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_xcp.h
@@ -119,6 +119,9 @@ int amdgpu_xcp_get_inst_details(struct amdgpu_xcp *xcp,
int amdgpu_xcp_dev_register(struct amdgpu_device *adev,
const struct pci_device_id *ent);
void amdgpu_xcp_dev_unplug(struct amdgpu_device *adev);
+int amdgpu_xcp_open_device(struct amdgpu_device *adev,
+ struct amdgpu_fpriv *fpriv,
+ struct drm_file *file_priv);
static inline int amdgpu_xcp_get_num_xcp(struct amdgpu_xcp_mgr *xcp_mgr)
{
--
GitLab