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drm/amdgpu: Use cached partition mode, if valid

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For current partition mode queries, return the mode cached in partition
manager whenever it's valid.

Signed-off-by: Lijo Lazar <lijo.lazar@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Lijo Lazar 2025-07-05 08:45:08 +05:30 committed by Alex Deucher
parent 7e11e01d1f
commit 8ff4a4b98d
1 changed files with 17 additions and 5 deletions
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22
drivers/gpu/drm/amd/amdgpu/amdgpu_xcp.c
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@ -218,15 +218,27 @@ int amdgpu_xcp_restore_partition_mode(struct amdgpu_xcp_mgr *xcp_mgr)
return __amdgpu_xcp_switch_partition_mode(xcp_mgr, xcp_mgr->mode);
}
static bool __amdgpu_xcp_is_cached_mode_valid(struct amdgpu_xcp_mgr *xcp_mgr)
{
if (!xcp_mgr->funcs || !xcp_mgr->funcs->query_partition_mode)
return true;
if (!amdgpu_sriov_vf(xcp_mgr->adev) &&
xcp_mgr->mode == AMDGPU_XCP_MODE_NONE)
return true;
if (xcp_mgr->mode != AMDGPU_XCP_MODE_NONE &&
xcp_mgr->mode != AMDGPU_XCP_MODE_TRANS)
return true;
return false;
}
int amdgpu_xcp_query_partition_mode(struct amdgpu_xcp_mgr *xcp_mgr, u32 flags)
{
int mode;
if (!amdgpu_sriov_vf(xcp_mgr->adev) &&
xcp_mgr->mode == AMDGPU_XCP_MODE_NONE)
return xcp_mgr->mode;
if (!xcp_mgr->funcs || !xcp_mgr->funcs->query_partition_mode)
if (__amdgpu_xcp_is_cached_mode_valid(xcp_mgr))
return xcp_mgr->mode;
if (!(flags & AMDGPU_XCP_FL_LOCKED))