Hi Chris, is this going into any drm-intel GIT tree? I found it useful and saw it in your kernel-tree [1]. - Sedat - [1] http://cgit.freedesktop.org/~ickle/linux-2.6/commit/?id=bf91098a1232db771feac66f88720c181ef61967 On Wed, Aug 14, 2013 at 1:35 PM, Chris Wilson <chris@xxxxxxxxxxxxxxxxxx> wrote: > Chasing wild speculation that we may be writing the wrong addresses > into the GTT for stolen objects, I would like to inspect those values. > > Signed-off-by: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx> > Cc: Sedat Dilek <sedat.dilek@xxxxxxxxx> > --- > > Sedak, can you please apply this patch and then attach the contents of > /sys/kernel/debug/dri/0/i915_gem_gtt with the broken display? > > --- > drivers/gpu/drm/i915/i915_debugfs.c | 47 ++++++++++++++++++++++++++++++++++++- > 1 file changed, 46 insertions(+), 1 deletion(-) > > diff --git a/drivers/gpu/drm/i915/i915_debugfs.c b/drivers/gpu/drm/i915/i915_debugfs.c > index 10d864c..4edf65a 100644 > --- a/drivers/gpu/drm/i915/i915_debugfs.c > +++ b/drivers/gpu/drm/i915/i915_debugfs.c > @@ -390,6 +390,51 @@ static int i915_gem_object_info(struct seq_file *m, void* data) > return 0; > } > > +static int i915_gem_gtt_contents(struct seq_file *m, struct drm_device *dev) > +{ > + struct drm_i915_private *dev_priv = dev->dev_private; > + gen6_gtt_pte_t __iomem *gtt_entries; > + gen6_gtt_pte_t scratch_pte; > + gen6_gtt_pte_t zero[8] = {}; > + int i, j, last_zero = 0; > + int ret; > + > + if (INTEL_INFO(dev)->gen < 6) > + return 0; > + > + ret = mutex_lock_interruptible(&dev->struct_mutex); > + if (ret) > + return ret; > + > + gtt_entries = (gen6_gtt_pte_t __iomem *)dev_priv->gtt.gsm; > + scratch_pte = dev_priv->gtt.base.pte_encode(dev_priv->gtt.base.scratch.addr, I915_CACHE_LLC); > + for (i = 0; i < gtt_total_entries(dev_priv->gtt); i += 8) { > + gen6_gtt_pte_t pte[8]; > + int this_zero; > + > + for (j = 0; j < 8; j++) { > + pte[j] = ioread32(>t_entries[i+j]); > + if (pte[j] == scratch_pte) > + pte[j] = 0; > + } > + > + this_zero = memcmp(pte, zero, sizeof(pte)) == 0; > + if (last_zero && this_zero) { > + if (last_zero++ == 1) > + seq_puts(m, "...\n"); > + continue; > + } > + > + seq_printf(m, "[%08x] %08x %08x %08x %08x %08x %08x %08x %08x\n", > + i, pte[0], pte[1], pte[2], pte[3], pte[4], pte[5], pte[6], pte[7]); > + last_zero = this_zero; > + } > + > + mutex_unlock(&dev->struct_mutex); > + > + return 0; > +} > + > static int i915_gem_gtt_info(struct seq_file *m, void *data) > { > struct drm_info_node *node = (struct drm_info_node *) m->private; > @@ -422,7 +467,7 @@ static int i915_gem_gtt_info(struct seq_file *m, void *data) > seq_printf(m, "Total %d objects, %zu bytes, %zu GTT size\n", > count, total_obj_size, total_gtt_size); > > - return 0; > + return i915_gem_gtt_contents(m, dev); > } > > static int i915_gem_pageflip_info(struct seq_file *m, void *data) > -- > 1.8.4.rc2 > _______________________________________________ Intel-gfx mailing list Intel-gfx@xxxxxxxxxxxxxxxxxxxxx http://lists.freedesktop.org/mailman/listinfo/intel-gfx
