From mboxrd@z Thu Jan 1 00:00:00 1970 From: Ben Widawsky Subject: [PATCH] drm/i915: PPGTT dump for debug Date: Mon, 24 Jun 2013 10:01:33 -0700 Message-ID: <1372093293-27986-2-git-send-email-ben@bwidawsk.net> References: <1372093293-27986-1-git-send-email-ben@bwidawsk.net> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Received: from shiva.localdomain (unknown [209.20.75.48]) by gabe.freedesktop.org (Postfix) with ESMTP id 59984E5C73 for ; Mon, 24 Jun 2013 09:58:27 -0700 (PDT) In-Reply-To: <1372093293-27986-1-git-send-email-ben@bwidawsk.net> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: intel-gfx-bounces+gcfxdi-intel-gfx=m.gmane.org@lists.freedesktop.org Errors-To: intel-gfx-bounces+gcfxdi-intel-gfx=m.gmane.org@lists.freedesktop.org To: Intel GFX Cc: Ben Widawsky List-Id: intel-gfx@lists.freedesktop.org No users yet Signed-off-by: Ben Widawsky --- drivers/gpu/drm/i915/i915_gem_gtt.c | 31 +++++++++++++++++++++++++++++++ 1 file changed, 31 insertions(+) diff --git a/drivers/gpu/drm/i915/i915_gem_gtt.c b/drivers/gpu/drm/i915/i915_gem_gtt.c index 893007a..005358f 100644 --- a/drivers/gpu/drm/i915/i915_gem_gtt.c +++ b/drivers/gpu/drm/i915/i915_gem_gtt.c @@ -99,6 +99,37 @@ static gen6_gtt_pte_t hsw_pte_encode(dma_addr_t addr, return pte; } +void gen6_dump_ppgtt(struct i915_hw_ppgtt *ppgtt) +{ + struct drm_i915_private *dev_priv = ppgtt->base.dev->dev_private; + gen6_gtt_pte_t __iomem *pd_addr; + uint32_t pd_entry; + int i, j; + + pd_addr = (gen6_gtt_pte_t __iomem*)dev_priv->gtt.gsm + + ppgtt->pd_offset / sizeof(gen6_gtt_pte_t); + + for (i = 0; i < ppgtt->num_pd_entries; i++) { + gen6_gtt_pte_t *pt_vaddr; + dma_addr_t pt_addr = ppgtt->pt_dma_addr[i]; + pd_entry = readl(pd_addr + i); + + if (pd_entry != (u32)(GEN6_PDE_ADDR_ENCODE(pt_addr) | GEN6_PDE_VALID)) + DRM_ERROR("Actual PDE: %x Expected PDE: %x", + pd_entry, + (u32)(GEN6_PDE_ADDR_ENCODE(pt_addr) | GEN6_PDE_VALID)); + + pt_vaddr = kmap_atomic(ppgtt->pt_pages[i]); + for (j = 0; j < I915_PPGTT_PT_ENTRIES; j++) { + gen6_gtt_pte_t scratch_pte = + ppgtt->base.pte_encode(ppgtt->base.scratch.addr, + I915_CACHE_LLC); + if (pt_vaddr[j] != scratch_pte) + DRM_ERROR("\tPTE = %x (%d %d)", pt_vaddr[j], i,j); + } + kunmap_atomic(pt_vaddr); + } +} static void gen6_write_pdes(struct i915_hw_ppgtt *ppgtt) { -- 1.8.3.1