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X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 12 Dec 2025 07:59:38.1906 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 1bdbd531-11e3-41fb-15e0-08de395465df X-MS-Exchange-CrossTenant-Id: 3dd8961f-e488-4e60-8e11-a82d994e183d X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=3dd8961f-e488-4e60-8e11-a82d994e183d;Ip=[165.204.84.17];Helo=[satlexmb07.amd.com] X-MS-Exchange-CrossTenant-AuthSource: BL02EPF00021F6B.namprd02.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: DM4PR12MB7766 The capabilities of getting and setting VRAM carveout size are exposed in the ATCS mask. Parse and store these capabilities for future use. Co-developed-by: Mario Limonciello (AMD) Signed-off-by: Mario Limonciello (AMD) Reviewed-by: Alex Deucher Signed-off-by: Yo-Jung Leo Lin (AMD) --- drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c | 4 ++++ drivers/gpu/drm/amd/include/amd_acpi.h | 4 +++- 2 files changed, 7 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c b/drivers/gpu/drm/amd= /amdgpu/amdgpu_acpi.c index d31460a9e958..610449d73a6c 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c @@ -116,7 +116,9 @@ struct amdgpu_atcs_functions { bool pcie_perf_req; bool pcie_dev_rdy; bool pcie_bus_width; + bool get_uma_size; bool power_shift_control; + bool set_uma_allocation_size; }; =20 struct amdgpu_atcs { @@ -587,7 +589,9 @@ static void amdgpu_atcs_parse_functions(struct amdgpu_a= tcs_functions *f, u32 mas f->pcie_perf_req =3D mask & ATCS_PCIE_PERFORMANCE_REQUEST_SUPPORTED; f->pcie_dev_rdy =3D mask & ATCS_PCIE_DEVICE_READY_NOTIFICATION_SUPPORTED; f->pcie_bus_width =3D mask & ATCS_SET_PCIE_BUS_WIDTH_SUPPORTED; + f->get_uma_size =3D mask & ACPI_ATCS_GET_UMA_SIZE_SUPPORTED; f->power_shift_control =3D mask & ATCS_SET_POWER_SHIFT_CONTROL_SUPPORTED; + f->set_uma_allocation_size =3D mask & ACPI_ATCS_SET_UMA_ALLOCATION_SIZE_S= UPPORTED; } =20 /** diff --git a/drivers/gpu/drm/amd/include/amd_acpi.h b/drivers/gpu/drm/amd/i= nclude/amd_acpi.h index 06badbf0c5b9..e582339e8e8e 100644 --- a/drivers/gpu/drm/amd/include/amd_acpi.h +++ b/drivers/gpu/drm/amd/include/amd_acpi.h @@ -427,7 +427,9 @@ struct atcs_pwr_shift_input { # define ATCS_PCIE_PERFORMANCE_REQUEST_SUPPORTED (1 << 1) # define ATCS_PCIE_DEVICE_READY_NOTIFICATION_SUPPORTED (1 << 2) # define ATCS_SET_PCIE_BUS_WIDTH_SUPPORTED (1 << 3) -# define ATCS_SET_POWER_SHIFT_CONTROL_SUPPORTED (1 << 7) +# define ACPI_ATCS_GET_UMA_SIZE_SUPPORTED (1 << 5) +# define ATCS_SET_POWER_SHIFT_CONTROL_SUPPORTED (1 << 7) +# define ACPI_ATCS_SET_UMA_ALLOCATION_SIZE_SUPPORTED (1 << 9) #define ATCS_FUNCTION_GET_EXTERNAL_STATE 0x1 /* ARG0: ATCS_FUNCTION_GET_EXTERNAL_STATE * ARG1: none --=20 2.43.0