diff options
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_gmc.c')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu_gmc.c | 47 |
1 files changed, 41 insertions, 6 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_gmc.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_gmc.c index 5884ab590486..acabb57aa8af 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_gmc.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_gmc.c @@ -136,8 +136,8 @@ uint64_t amdgpu_gmc_agp_addr(struct ttm_buffer_object *bo) /** * amdgpu_gmc_vram_location - try to find VRAM location * - * @adev: amdgpu device structure holding all necessary informations - * @mc: memory controller structure holding memory informations + * @adev: amdgpu device structure holding all necessary information + * @mc: memory controller structure holding memory information * @base: base address at which to put VRAM * * Function will try to place VRAM at base address provided @@ -165,8 +165,8 @@ void amdgpu_gmc_vram_location(struct amdgpu_device *adev, struct amdgpu_gmc *mc, /** * amdgpu_gmc_gart_location - try to find GART location * - * @adev: amdgpu device structure holding all necessary informations - * @mc: memory controller structure holding memory informations + * @adev: amdgpu device structure holding all necessary information + * @mc: memory controller structure holding memory information * * Function will place try to place GART before or after VRAM. * @@ -207,8 +207,8 @@ void amdgpu_gmc_gart_location(struct amdgpu_device *adev, struct amdgpu_gmc *mc) /** * amdgpu_gmc_agp_location - try to find AGP location - * @adev: amdgpu device structure holding all necessary informations - * @mc: memory controller structure holding memory informations + * @adev: amdgpu device structure holding all necessary information + * @mc: memory controller structure holding memory information * * Function will place try to find a place for the AGP BAR in the MC address * space. @@ -373,3 +373,38 @@ int amdgpu_gmc_allocate_vm_inv_eng(struct amdgpu_device *adev) return 0; } + +/** + * amdgpu_tmz_set -- check and set if a device supports TMZ + * @adev: amdgpu_device pointer + * + * Check and set if an the device @adev supports Trusted Memory + * Zones (TMZ). + */ +void amdgpu_gmc_tmz_set(struct amdgpu_device *adev) +{ + switch (adev->asic_type) { + case CHIP_RAVEN: + case CHIP_RENOIR: + case CHIP_NAVI10: + case CHIP_NAVI14: + case CHIP_NAVI12: + /* Don't enable it by default yet. + */ + if (amdgpu_tmz < 1) { + adev->gmc.tmz_enabled = false; + dev_info(adev->dev, + "Trusted Memory Zone (TMZ) feature disabled as experimental (default)\n"); + } else { + adev->gmc.tmz_enabled = true; + dev_info(adev->dev, + "Trusted Memory Zone (TMZ) feature enabled as experimental (cmd line)\n"); + } + break; + default: + adev->gmc.tmz_enabled = false; + dev_warn(adev->dev, + "Trusted Memory Zone (TMZ) feature not supported\n"); + break; + } +} |