Print a warnning message if the system can't access the resize bar register when using large bar.
Signed-off-by: Ma Jun <[email protected]> --- drivers/gpu/drm/amd/amdgpu/amdgpu_device.c | 10 +++++++++- 1 file changed, 9 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c index 4b694696930e..e7aedb4bd66e 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c @@ -1417,6 +1417,12 @@ void amdgpu_device_wb_free(struct amdgpu_device *adev, u32 wb) __clear_bit(wb, adev->wb.used); } +static inline void amdgpu_find_rb_register(struct amdgpu_device *adev) +{ + if (!pci_find_ext_capability(adev->pdev, PCI_EXT_CAP_ID_REBAR)) + DRM_WARN("System can't access the resize bar register,please check!!\n"); +} + /** * amdgpu_device_resize_fb_bar - try to resize FB BAR * @@ -1444,8 +1450,10 @@ int amdgpu_device_resize_fb_bar(struct amdgpu_device *adev) /* skip if the bios has already enabled large BAR */ if (adev->gmc.real_vram_size && - (pci_resource_len(adev->pdev, 0) >= adev->gmc.real_vram_size)) + (pci_resource_len(adev->pdev, 0) >= adev->gmc.real_vram_size)) { + amdgpu_find_rb_register(adev); return 0; + } /* Check if the root BUS has 64bit memory resources */ root = adev->pdev->bus; -- 2.34.1
