On Sun, Sep 01, 2013 at 03:59:00PM +0200, Sedat Dilek wrote: > 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 It can already be accomplished with the intel_gtt tool in the intel-gpu-tools suite. > > 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 -- Ben Widawsky, Intel Open Source Technology Center _______________________________________________ Intel-gfx mailing list Intel-gfx@xxxxxxxxxxxxxxxxxxxxx http://lists.freedesktop.org/mailman/listinfo/intel-gfx
