[PATCH 4/4] drm/amdgpu: Assign unique id to compute partition
Lijo Lazar
lijo.lazar at amd.com
Mon Aug 4 11:58:08 UTC 2025
Assign unique id to compute partition. This is the unique id of the
first XCD instance belonging to the partition.
Signed-off-by: Lijo Lazar <lijo.lazar at amd.com>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_xcp.c | 20 ++++++++++++++++++++
drivers/gpu/drm/amd/amdgpu/amdgpu_xcp.h | 1 +
2 files changed, 21 insertions(+)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_xcp.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_xcp.c
index 699acc1b46b5..1083db8cea2e 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_xcp.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_xcp.c
@@ -120,6 +120,25 @@ static void __amdgpu_xcp_add_block(struct amdgpu_xcp_mgr *xcp_mgr, int xcp_id,
xcp->valid = true;
}
+static void __amdgpu_xcp_set_unique_id(struct amdgpu_xcp_mgr *xcp_mgr,
+ int xcp_id)
+{
+ struct amdgpu_xcp *xcp = &xcp_mgr->xcp[xcp_id];
+ struct amdgpu_device *adev = xcp_mgr->adev;
+ uint32_t inst_mask;
+ uint64_t uid;
+ int i;
+
+ if (!amdgpu_xcp_get_inst_details(xcp, AMDGPU_XCP_GFX, &inst_mask) &&
+ inst_mask) {
+ i = GET_INST(GC, (ffs(inst_mask) - 1));
+ uid = amdgpu_device_get_uid(xcp_mgr->adev->uid_info,
+ AMDGPU_UID_TYPE_XCD, i);
+ if (uid)
+ xcp->unique_id = uid;
+ }
+}
+
int amdgpu_xcp_init(struct amdgpu_xcp_mgr *xcp_mgr, int num_xcps, int mode)
{
struct amdgpu_device *adev = xcp_mgr->adev;
@@ -158,6 +177,7 @@ int amdgpu_xcp_init(struct amdgpu_xcp_mgr *xcp_mgr, int num_xcps, int mode)
else
xcp_mgr->xcp[i].mem_id = mem_id;
}
+ __amdgpu_xcp_set_unique_id(xcp_mgr, i);
}
xcp_mgr->num_xcps = num_xcps;
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_xcp.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_xcp.h
index 70a0f8400b57..1928d9e224fc 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_xcp.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_xcp.h
@@ -112,6 +112,7 @@ struct amdgpu_xcp {
struct amdgpu_sched gpu_sched[AMDGPU_HW_IP_NUM][AMDGPU_RING_PRIO_MAX];
struct amdgpu_xcp_mgr *xcp_mgr;
struct kobject kobj;
+ uint64_t unique_id;
};
struct amdgpu_xcp_mgr {
--
2.49.0
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