> So when you say that all Y tiling tests fail without this kernel hack, which tests you are referring to? If I revert this IGT patch and do not make below kernel change, kms_draw_crc (ytiled cases, last patch in this series) fail with following error. Test assertion failure function igt_assert_crc_equal, file hardware/intel/intel-gpu-tools/lib/igt_debugfs.c:266: Failed assertion: a->crc[i] == b->crc[i] error: 0x68c96b8b != 0x948e53b I think, I shall debug it further and try to fix it without making this change. Regards, Praveen -----Original Message----- From: Tvrtko Ursulin [mailto:tvrtko.ursulin@xxxxxxxxxxxxxxx] Sent: Tuesday, October 25, 2016 6:07 PM To: Paneri, Praveen <praveen.paneri@xxxxxxxxx>; intel-gfx@xxxxxxxxxxxxxxxxxxxxx Subject: Re: [PATCH 1/4] igt_fb: Add Y-tiling support On 25/10/2016 13:06, Paneri, Praveen wrote: > Hi Tvrtko, > > Along with this change I made following change in the kernel side. I was not sure if this is a hack of a legitimate change. Could you please give me a pointer about how to move fwd from here? Without this all Y-tiling tests would fail. > > --- a/drivers/gpu/drm/i915/intel_display.c > +++ b/drivers/gpu/drm/i915/intel_display.c > @@ -15406,8 +15406,7 @@ static int intel_framebuffer_init(struct drm_device *dev, > if (obj->tiling_mode == I915_TILING_X) > mode_cmd->modifier[0] = I915_FORMAT_MOD_X_TILED; > else if (obj->tiling_mode == I915_TILING_Y) { > - DRM_DEBUG("No Y tiling for legacy addfb\n"); > - return -EINVAL; > + mode_cmd->modifier[0] = > + I915_FORMAT_MOD_Y_TILED; > } > } It would be a controversial change, "beyond my pay grade". :) If you drop this particular IGT patch, you can still create Y tiled framebuffers and display them (as the existing tests already do that). So when you say that all Y tiling tests fail without this kernel hack, which tests you are referring to? Regards, Tvrtko > Regards, > Praveen > > > -----Original Message----- > From: Tvrtko Ursulin [mailto:tvrtko.ursulin@xxxxxxxxxxxxxxx] > Sent: Tuesday, October 25, 2016 1:36 PM > To: Paneri, Praveen <praveen.paneri@xxxxxxxxx>; > intel-gfx@xxxxxxxxxxxxxxxxxxxxx > Subject: Re: [PATCH 1/4] igt_fb: Add Y-tiling support > > > On 24/10/2016 17:55, Praveen Paneri wrote: >> This adds Y-tiling check in igt_create_fb_with_bo_size as now we >> should also be able to create Y-tiled FBs. >> >> Signed-off-by: Praveen Paneri <praveen.paneri@xxxxxxxxx> >> --- >> lib/igt_fb.c | 3 ++- >> 1 file changed, 2 insertions(+), 1 deletion(-) >> >> diff --git a/lib/igt_fb.c b/lib/igt_fb.c index 47472f4..bf1d372 >> 100644 >> --- a/lib/igt_fb.c >> +++ b/lib/igt_fb.c >> @@ -608,7 +608,8 @@ igt_create_fb_with_bo_size(int fd, int width, int height, >> __func__, fb->gem_handle, fb->stride); >> >> if (tiling != LOCAL_DRM_FORMAT_MOD_NONE && >> - tiling != LOCAL_I915_FORMAT_MOD_X_TILED) { >> + tiling != LOCAL_I915_FORMAT_MOD_X_TILED && >> + tiling != LOCAL_I915_FORMAT_MOD_Y_TILED) { >> do_or_die(__kms_addfb(fd, fb->gem_handle, width, height, >> fb->stride, format, tiling, >> LOCAL_DRM_MODE_FB_MODIFIERS, &fb_id)); >> > > This works now? Ie. doesn't hit "No Y Tiling for legacy addfb" error in the driver? > > Regards, > > Tvrtko > _______________________________________________ Intel-gfx mailing list Intel-gfx@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/intel-gfx
