On Mon, Nov 3, 2025 at 3:01 AM Yo-Jung Leo Lin (AMD) <[email protected]> wrote: > > 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) <[email protected]> > Signed-off-by: Mario Limonciello (AMD) <[email protected]> > Signed-off-by: Yo-Jung Leo Lin (AMD) <[email protected]>
This patch is: Reviewed-by: Alex Deucher <[email protected]> > --- > 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 6c62e27b9800..0743fd8620e4 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; > }; > > struct amdgpu_atcs { > @@ -588,7 +590,9 @@ static void amdgpu_atcs_parse_functions(struct > amdgpu_atcs_functions *f, u32 mas > f->pcie_perf_req = mask & ATCS_PCIE_PERFORMANCE_REQUEST_SUPPORTED; > f->pcie_dev_rdy = mask & > ATCS_PCIE_DEVICE_READY_NOTIFICATION_SUPPORTED; > f->pcie_bus_width = mask & ATCS_SET_PCIE_BUS_WIDTH_SUPPORTED; > + f->get_uma_size = mask & ACPI_ATCS_GET_UMA_SIZE_SUPPORTED; > f->power_shift_control = mask & > ATCS_SET_POWER_SHIFT_CONTROL_SUPPORTED; > + f->set_uma_allocation_size = mask & > ACPI_ATCS_SET_UMA_ALLOCATION_SIZE_SUPPORTED; > } > > /** > diff --git a/drivers/gpu/drm/amd/include/amd_acpi.h > b/drivers/gpu/drm/amd/include/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 > > -- > 2.43.0 >
