On Thu, 10 Dec 2015, remu kelly <remukelly@xxxxxxxxx> wrote: > Hi intel team, > > I am working on a intel device with Linux kernel. I am able to see the i915 > debugfs interface in path :- > "/sys/kernel/debug/dri/0" > > but there are so many interface commands to use as listed below: > !!!!!!!!!!!!!!!!!!!!!!!!! > > bufs hs_adjust i915_drpc_info > i915_gem_drop_caches i915_gem_inactive i915_gen6_forcewake_count > i915_opregion i915_rpm_api name > cb_adjust i915_cache_sharing i915_edp_psr_status > i915_gem_fence_regs i915_gem_interrupt i915_gfxec > i915_pc8_status i915_rps_init vm > clients i915_capabilities i915_emon_status > i915_gem_framebuffer i915_gem_objects i915_inttoext_table > i915_ppgtt_info i915_rstdby_delays vma > csc_adjust i915_context_status i915_energy_uJ > i915_gem_gtt i915_gem_pageflip i915_iosf_api > i915_rc6_api i915_sr_status > csc_enable i915_cur_delayinfo i915_error_state > i915_gem_hws i915_gem_pinned i915_ips_status > i915_rc6_status i915_swizzle_info > gamma_adjust i915_delayfreq_table i915_fbc_status > i915_gem_hws_blt i915_gem_request i915_llc > i915_ring_freq_table i915_timestamp > gamma_enable i915_dpio i915_forcewake_user > i915_gem_hws_bsd i915_gem_seqno i915_mmio_api > i915_ring_hangcheck i915_turbo_api > gem_names i915_dpst_api i915_gem_active > i915_gem_hws_vebox i915_gem_stolen i915_next_seqno > i915_ring_stop i915_wedged > > !!!!!!!!!!!!!!!!!!!!!!!! > > > But I don't see any README file on how to use each command, I mean what > should be command format from shell command prompt, so that we can do the > needful activity. They are not commands. They are almost exclusive plain text you can just 'cat'; do that and you'll see what they're about. Some files you can write to make changes, check the file permissions on what are writable. (But don't do that unless you figure out first what you're doing!) I think the only binary file is i915_opregion. You can use the intel_opregion_decode and intel_bios_reader tools from the Intel GPU Tools [1] to decode those. > I am new to Linux itself, so it would be helpful if I can get some info on > how to use the below interfaces in particular:- > > i915_mmio_api > i915_dpst_api > cb_adjust These files are not part of the upstream i915 driver. You're running something else; can't help you with that. Try whoever gave you the driver. > And I have one suggestion, please use "DRM_ERROR" in all these interfaces, > as they show up in "dmesg", the copy to ubuf is not showing up in dmesg > > Please please help me. As the name suggests, these are for debugging, not something we would encourage people to use. We may also change them as we like. The definitive source for what they do is in drivers/gpu/drm/i915/i915_debugfs.c. If you don't know where you can find that, you probably shouldn't do anything with the files, unless e.g. we ask you to attach them in a bug report or something. HTH, Jani. [1] http://cgit.freedesktop.org/xorg/app/intel-gpu-tools/ -- Jani Nikula, Intel Open Source Technology Center _______________________________________________ Intel-gfx mailing list Intel-gfx@xxxxxxxxxxxxxxxxxxxxx http://lists.freedesktop.org/mailman/listinfo/intel-gfx
