diff options
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu.h | 1 | ||||
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu_device.c | 3 | ||||
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c | 11 |
3 files changed, 15 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu.h b/drivers/gpu/drm/amd/amdgpu/amdgpu.h index 9a9e5249c63f..8316f93c1cce 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu.h +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu.h @@ -266,6 +266,7 @@ extern int amdgpu_umsch_mm_fwlog; extern int amdgpu_user_partt_mode; extern int amdgpu_agp; +extern int amdgpu_rebar; extern int amdgpu_wbrf; diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c index 7525128f971f..f4a01704effc 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c @@ -1680,6 +1680,9 @@ int amdgpu_device_resize_fb_bar(struct amdgpu_device *adev) if (amdgpu_sriov_vf(adev)) return 0; + if (!amdgpu_rebar) + return 0; + /* resizing on Dell G5 SE platforms causes problems with runtime pm */ if ((amdgpu_runtime_pm != 0) && adev->pdev->vendor == PCI_VENDOR_ID_ATI && diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c index 26bf896f1444..2ca04d6aaa82 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c @@ -238,6 +238,7 @@ int amdgpu_agp = -1; /* auto */ int amdgpu_wbrf = -1; int amdgpu_damage_clips = -1; /* auto */ int amdgpu_umsch_mm_fwlog; +int amdgpu_rebar = -1; /* auto */ DECLARE_DYNDBG_CLASSMAP(drm_debug_classes, DD_CLASS_TYPE_DISJOINT_BITS, 0, "DRM_UT_CORE", @@ -1096,6 +1097,16 @@ MODULE_PARM_DESC(wbrf, "Enable Wifi RFI interference mitigation (0 = disabled, 1 = enabled, -1 = auto(default)"); module_param_named(wbrf, amdgpu_wbrf, int, 0444); +/** + * DOC: rebar (int) + * Allow BAR resizing. Disable this to prevent the driver from attempting + * to resize the BAR if the GPU supports it and there is available MMIO space. + * Note that this just prevents the driver from resizing the BAR. The BIOS + * may have already resized the BAR at boot time. + */ +MODULE_PARM_DESC(rebar, "Resizable BAR (-1 = auto (default), 0 = disable, 1 = enable)"); +module_param_named(rebar, amdgpu_rebar, int, 0444); + /* These devices are not supported by amdgpu. * They are supported by the mach64, r128, radeon drivers */ |