ac/gpu_info: if clock crystal frequency is 0, print an error and set 1

During bring-up, this is often 0. Prevent automatic disablement of
ARB_timer_query and demotion of the OpenGL version to 3.2 by setting
a non-zero frequency. Print an error message instead.

Reviewed-by: Nicolai Hähnle <nicolai.haehnle@amd.com>

diff --git a/src/amd/common/ac_gpu_info.c b/src/amd/common/ac_gpu_info.c
index 3f39a08..ced7183 100644 (file)
--- a/src/amd/common/ac_gpu_info.c
+++ b/src/amd/common/ac_gpu_info.c
@@ -260,6 +260,10 @@ bool ac_query_gpu_info(int fd, amdgpu_device_handle dev,
        info->has_userptr = true;
        info->num_render_backends = amdinfo->rb_pipes;
        info->clock_crystal_freq = amdinfo->gpu_counter_freq;
+       if (!info->clock_crystal_freq) {
+               fprintf(stderr, "amdgpu: clock crystal frequency is 0, timestamps will be wrong\n");
+               info->clock_crystal_freq = 1;
+       }
        info->tcc_cache_line_size = 64; /* TC L2 line size on GCN */
        if (info->chip_class == GFX9) {
                info->num_tile_pipes = 1 << G_0098F8_NUM_PIPES(amdinfo->gb_addr_cfg);