From patchwork Tue Apr 29 21:52:38 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ben Widawsky X-Patchwork-Id: 4089361 Return-Path: X-Original-To: patchwork-intel-gfx@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.19.201]) by patchwork2.web.kernel.org (Postfix) with ESMTP id 4AA68C0ACC for ; Tue, 29 Apr 2014 21:53:00 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 5DE5C201F9 for ; Tue, 29 Apr 2014 21:52:59 +0000 (UTC) Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) by mail.kernel.org (Postfix) with ESMTP id 4759C2021B for ; Tue, 29 Apr 2014 21:52:58 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id D2C378A46C; Tue, 29 Apr 2014 14:52:56 -0700 (PDT) X-Original-To: intel-gfx@lists.freedesktop.org Delivered-To: intel-gfx@lists.freedesktop.org Received: from mga09.intel.com (mga09.intel.com [134.134.136.24]) by gabe.freedesktop.org (Postfix) with ESMTP id B474A8A471 for ; Tue, 29 Apr 2014 14:52:49 -0700 (PDT) Received: from orsmga002.jf.intel.com ([10.7.209.21]) by orsmga102.jf.intel.com with ESMTP; 29 Apr 2014 14:47:54 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="4.97,953,1389772800"; d="scan'208";a="531947096" Received: from ironside.jf.intel.com ([10.7.197.221]) by orsmga002.jf.intel.com with ESMTP; 29 Apr 2014 14:52:48 -0700 From: Ben Widawsky To: Intel GFX Date: Tue, 29 Apr 2014 14:52:38 -0700 Message-Id: <1398808360-3674-12-git-send-email-benjamin.widawsky@intel.com> X-Mailer: git-send-email 1.9.2 In-Reply-To: <1398808360-3674-1-git-send-email-benjamin.widawsky@intel.com> References: <1398808360-3674-1-git-send-email-benjamin.widawsky@intel.com> Subject: [Intel-gfx] [PATCH 11/13] drm/i915/bdw: collect semaphore error state X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Intel graphics driver community testing & development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" X-Spam-Status: No, score=-4.8 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_MED, RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Since the semaphore information is in an object, just dump it, and let the user parse it later. NOTE: The page being used for the semaphores are incoherent with the CPU. No matter what I do, I cannot figure out a way to read anything but 0s. Note that the semaphore waits are indeed working. v2: Don't print signal, and wait (they should be the same). Instead, print sync_seqno (Chris) v3: Free the semaphore error object (Chris) v4: Fix semaphore offset calculation during error state collection (Ville) v5: VCS2 rebase Make semaphore object error capture coding style consistent (Ville) Do the proper math for the signal offset (Ville) Signed-off-by: Ben Widawsky --- drivers/gpu/drm/i915/i915_drv.h | 1 + drivers/gpu/drm/i915/i915_gpu_error.c | 51 ++++++++++++++++++++++++++++++--- drivers/gpu/drm/i915/intel_ringbuffer.h | 14 ++++----- 3 files changed, 55 insertions(+), 11 deletions(-) diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h index 44cb744..237faf3 100644 --- a/drivers/gpu/drm/i915/i915_drv.h +++ b/drivers/gpu/drm/i915/i915_drv.h @@ -328,6 +328,7 @@ struct drm_i915_error_state { u64 fence[I915_MAX_NUM_FENCES]; struct intel_overlay_error_state *overlay; struct intel_display_error_state *display; + struct drm_i915_error_object *semaphore_obj; struct drm_i915_error_ring { bool valid; diff --git a/drivers/gpu/drm/i915/i915_gpu_error.c b/drivers/gpu/drm/i915/i915_gpu_error.c index a7eaab2..50d2af8 100644 --- a/drivers/gpu/drm/i915/i915_gpu_error.c +++ b/drivers/gpu/drm/i915/i915_gpu_error.c @@ -326,6 +326,7 @@ int i915_error_state_to_str(struct drm_i915_error_state_buf *m, struct drm_device *dev = error_priv->dev; struct drm_i915_private *dev_priv = dev->dev_private; struct drm_i915_error_state *error = error_priv->error; + struct drm_i915_error_object *obj; int i, j, offset, elt; int max_hangcheck_score; @@ -394,8 +395,6 @@ int i915_error_state_to_str(struct drm_i915_error_state_buf *m, error->pinned_bo_count[0]); for (i = 0; i < ARRAY_SIZE(error->ring); i++) { - struct drm_i915_error_object *obj; - obj = error->ring[i].batchbuffer; if (obj) { err_puts(m, dev_priv->ring[i].name); @@ -458,6 +457,18 @@ int i915_error_state_to_str(struct drm_i915_error_state_buf *m, } } + if ((obj = error->semaphore_obj)) { + err_printf(m, "Semaphore page = 0x%08x\n", obj->gtt_offset); + for (elt = 0; elt < PAGE_SIZE/16; elt += 4) { + err_printf(m, "[%04x] %08x %08x %08x %08x\n", + elt * 4, + obj->pages[0][elt], + obj->pages[0][elt+1], + obj->pages[0][elt+2], + obj->pages[0][elt+3]); + } + } + if (error->overlay) intel_overlay_print_error_state(m, error->overlay); @@ -528,6 +539,7 @@ static void i915_error_state_free(struct kref *error_ref) kfree(error->ring[i].requests); } + i915_error_object_free(error->semaphore_obj); kfree(error->active_bo); kfree(error->overlay); kfree(error->display); @@ -745,6 +757,33 @@ static void i915_gem_record_fences(struct drm_device *dev, } +static void gen8_record_semaphore_state(struct drm_i915_private *dev_priv, + struct drm_i915_error_state *error, + struct intel_ring_buffer *ring, + struct drm_i915_error_ring *ering) +{ + struct intel_ring_buffer *useless; + int i; + + if (!i915_semaphore_is_enabled(dev_priv->dev)) + return; + + if (!error->semaphore_obj) + error->semaphore_obj = + i915_error_object_create(dev_priv, + dev_priv->semaphore_obj, + &dev_priv->gtt.base); + + for_each_ring(useless, dev_priv, i) { + u16 signal_offset = + (GEN8_SIGNAL_OFFSET(ring, i) & PAGE_MASK) / 4; + u32 *tmp = error->semaphore_obj->pages[0]; + + ering->semaphore_mboxes[i] = tmp[signal_offset]; + ering->semaphore_seqno[i] = ring->semaphore.sync_seqno[i]; + } +} + static void gen6_record_semaphore_state(struct drm_i915_private *dev_priv, struct intel_ring_buffer *ring, struct drm_i915_error_ring *ering) @@ -762,6 +801,7 @@ static void gen6_record_semaphore_state(struct drm_i915_private *dev_priv, } static void i915_record_ring_state(struct drm_device *dev, + struct drm_i915_error_state *error, struct intel_ring_buffer *ring, struct drm_i915_error_ring *ering) { @@ -770,7 +810,10 @@ static void i915_record_ring_state(struct drm_device *dev, if (INTEL_INFO(dev)->gen >= 6) { ering->rc_psmi = I915_READ(ring->mmio_base + 0x50); ering->fault_reg = I915_READ(RING_FAULT_REG(ring)); - gen6_record_semaphore_state(dev_priv, ring, ering); + if (INTEL_INFO(dev)->gen >= 8) + gen8_record_semaphore_state(dev_priv, error, ring, ering); + else + gen6_record_semaphore_state(dev_priv, ring, ering); } if (INTEL_INFO(dev)->gen >= 4) { @@ -897,7 +940,7 @@ static void i915_gem_record_rings(struct drm_device *dev, error->ring[i].valid = true; - i915_record_ring_state(dev, ring, &error->ring[i]); + i915_record_ring_state(dev, error, ring, &error->ring[i]); error->ring[i].pid = -1; request = i915_gem_find_active_request(ring); diff --git a/drivers/gpu/drm/i915/intel_ringbuffer.h b/drivers/gpu/drm/i915/intel_ringbuffer.h index a7ff166..20af934 100644 --- a/drivers/gpu/drm/i915/intel_ringbuffer.h +++ b/drivers/gpu/drm/i915/intel_ringbuffer.h @@ -40,9 +40,9 @@ struct intel_hw_status_page { * do the writes, and that must have qw aligned offsets, simply pretend it's 8b. */ #define i915_semaphore_seqno_size sizeof(uint64_t) -#define GEN8_SIGNAL_OFFSET(to) \ +#define GEN8_SIGNAL_OFFSET(__ring, to) \ (i915_gem_obj_ggtt_offset(dev_priv->semaphore_obj) + \ - (ring->id * I915_NUM_RINGS * i915_semaphore_seqno_size) + \ + ((__ring)->id * I915_NUM_RINGS * i915_semaphore_seqno_size) + \ (i915_semaphore_seqno_size * (to))) #define GEN8_WAIT_OFFSET(__ring, from) \ @@ -54,11 +54,11 @@ struct intel_hw_status_page { if (!dev_priv->semaphore_obj) { \ break; \ } \ - ring->semaphore.signal_ggtt[RCS] = GEN8_SIGNAL_OFFSET(RCS); \ - ring->semaphore.signal_ggtt[VCS] = GEN8_SIGNAL_OFFSET(VCS); \ - ring->semaphore.signal_ggtt[BCS] = GEN8_SIGNAL_OFFSET(BCS); \ - ring->semaphore.signal_ggtt[VECS] = GEN8_SIGNAL_OFFSET(VECS); \ - ring->semaphore.signal_ggtt[VCS2] = GEN8_SIGNAL_OFFSET(VCS2); \ + ring->semaphore.signal_ggtt[RCS] = GEN8_SIGNAL_OFFSET(ring, RCS); \ + ring->semaphore.signal_ggtt[VCS] = GEN8_SIGNAL_OFFSET(ring, VCS); \ + ring->semaphore.signal_ggtt[BCS] = GEN8_SIGNAL_OFFSET(ring, BCS); \ + ring->semaphore.signal_ggtt[VECS] = GEN8_SIGNAL_OFFSET(ring, VECS); \ + ring->semaphore.signal_ggtt[VCS2] = GEN8_SIGNAL_OFFSET(ring, VCS2); \ ring->semaphore.signal_ggtt[ring->id] = MI_SEMAPHORE_SYNC_INVALID; \ } while(0)