Am 29.03.2017 um 10:08 schrieb Junwei Zhang:
> Signed-off-by: Junwei Zhang <Jerry.Zhang at amd.com>
Reviewed-by: Christian König <christian.koenig at amd.com> for only this patch.
> ---
> drivers/gpu/drm/amd/amdgpu/amdgpu_device.c | 51 ++++++++++++++++++------------
> 1 file changed, 31 insertions(+), 20 deletions(-)
>
> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
> index 3500da3..1ad1113 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
> @@ -1078,6 +1078,36 @@ static void amdgpu_get_block_size(struct amdgpu_device *adev)
> }
> }
>
> +static void amdgpu_check_vm_size(struct amdgpu_device *adev)
> +{
> + if (!amdgpu_check_pot_argument(amdgpu_vm_size)) {
> + dev_warn(adev->dev, "VM size (%d) must be a power of 2\n",
> + amdgpu_vm_size);
> + goto def_value;
> + }
> +
> + if (amdgpu_vm_size < 1) {
> + dev_warn(adev->dev, "VM size (%d) too small, min is 1GB\n",
> + amdgpu_vm_size);
> + goto def_value;
> + }
> +
> + /*
> + * Max GPUVM size for Cayman, SI, CI VI are 40 bits.
> + */
> + if (amdgpu_vm_size > 1024) {
> + dev_warn(adev->dev, "VM size (%d) too large, max is 1TB\n",
> + amdgpu_vm_size);
> + goto def_value;
> + }
> +
> + return;
> +
> +def_value:
> + amdgpu_vm_size = 8;
> + dev_info(adev->dev, "set default VM size %dGB\n", amdgpu_vm_size);
> +}
> +
> /**
> * amdgpu_check_arguments - validate module params
> *
> @@ -1107,26 +1137,7 @@ static void amdgpu_check_arguments(struct amdgpu_device *adev)
> }
> }
>
> - if (!amdgpu_check_pot_argument(amdgpu_vm_size)) {
> - dev_warn(adev->dev, "VM size (%d) must be a power of 2\n",
> - amdgpu_vm_size);
> - amdgpu_vm_size = 8;
> - }
> -
> - if (amdgpu_vm_size < 1) {
> - dev_warn(adev->dev, "VM size (%d) too small, min is 1GB\n",
> - amdgpu_vm_size);
> - amdgpu_vm_size = 8;
> - }
> -
> - /*
> - * Max GPUVM size for Cayman, SI and CI are 40 bits.
> - */
> - if (amdgpu_vm_size > 1024) {
> - dev_warn(adev->dev, "VM size (%d) too large, max is 1TB\n",
> - amdgpu_vm_size);
> - amdgpu_vm_size = 8;
> - }
> + amdgpu_check_vm_size(adev);
>
> amdgpu_get_block_size(adev);
>
