ac/gpu_info: clamp gart_size_kb and vram_size_kb to fix buggy kernel driver

amdgpu returns 12 TB of GTT on Kaveri, which resulted in 0 KB of GTT
after the conversion to uint32_t, which caused us to report 0 as the UBO
size, which disabled UBOs and downgraded the driver to OpenGL 3.0.

Fixes: aee8ee17a50 - radeonsi: change max TBO/SSBO sizes again and rework max alloc size
Closes: https://gitlab.freedesktop.org/mesa/mesa/-/issues/6642

Reviewed-by: Pierre-Eric Pelloux-Prayer <pierre-eric.pelloux-prayer@amd.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/16885>

diff --git a/src/amd/common/ac_gpu_info.c b/src/amd/common/ac_gpu_info.c
index e784b1e..8c35b26 100644 (file)
--- a/src/amd/common/ac_gpu_info.c
+++ b/src/amd/common/ac_gpu_info.c
@@ -650,8 +650,8 @@ bool ac_query_gpu_info(int fd, void *dev_p, struct radeon_info *info,
       info->vram_vis_size = vram_vis.heap_size;
    }
 
-   info->gart_size_kb = DIV_ROUND_UP(info->gart_size, 1024);
-   info->vram_size_kb = DIV_ROUND_UP(info->vram_size, 1024);
+   info->gart_size_kb = MIN2(DIV_ROUND_UP(info->gart_size, 1024), UINT32_MAX);
+   info->vram_size_kb = MIN2(DIV_ROUND_UP(info->vram_size, 1024), UINT32_MAX);
 
    if (info->drm_minor >= 41) {
       amdgpu_query_video_caps_info(dev, AMDGPU_INFO_VIDEO_CAPS_DECODE,