From patchwork Thu Aug 7 12:23:20 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Thomas Daniel X-Patchwork-Id: 4690931 Return-Path: X-Original-To: patchwork-intel-gfx@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.19.201]) by patchwork1.web.kernel.org (Postfix) with ESMTP id 330AA9F37E for ; Thu, 7 Aug 2014 12:23:30 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 42FD5201B4 for ; Thu, 7 Aug 2014 12:23:29 +0000 (UTC) Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) by mail.kernel.org (Postfix) with ESMTP id 13F0B2017A for ; Thu, 7 Aug 2014 12:23:28 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 8A4416E769; Thu, 7 Aug 2014 05:23:27 -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 E58056E769 for ; Thu, 7 Aug 2014 05:23:25 -0700 (PDT) Received: from orsmga001.jf.intel.com ([10.7.209.18]) by orsmga102.jf.intel.com with ESMTP; 07 Aug 2014 05:17:37 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.01,817,1400050800"; d="scan'208";a="555119322" Received: from thomasda-linux2.isw.intel.com ([10.102.226.50]) by orsmga001.jf.intel.com with ESMTP; 07 Aug 2014 05:23:22 -0700 From: Thomas Daniel To: intel-gfx@lists.freedesktop.org Date: Thu, 7 Aug 2014 13:23:20 +0100 Message-Id: <1407414200-6022-1-git-send-email-thomas.daniel@intel.com> X-Mailer: git-send-email 1.7.9.5 In-Reply-To: <1406217891-8912-38-git-send-email-thomas.daniel@intel.com> References: <1406217891-8912-38-git-send-email-thomas.daniel@intel.com> Subject: [Intel-gfx] [PATCH 37/43] drm/i915/bdw: Display execlists info in debugfs 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=-4.9 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 From: Oscar Mateo v2: Warn and return if LRCs are not enabled. v3: Grab the Execlists spinlock (noticed by Daniel Vetter). Signed-off-by: Oscar Mateo v4: Lock the struct mutex for atomic state capture Signed-off-by: Thomas Daniel Reviewed-by: Damien Lespiau --- drivers/gpu/drm/i915/i915_debugfs.c | 80 +++++++++++++++++++++++++++++++++++ drivers/gpu/drm/i915/intel_lrc.c | 6 --- drivers/gpu/drm/i915/intel_lrc.h | 7 +++ 3 files changed, 87 insertions(+), 6 deletions(-) diff --git a/drivers/gpu/drm/i915/i915_debugfs.c b/drivers/gpu/drm/i915/i915_debugfs.c index fc39610..f8f0e11 100644 --- a/drivers/gpu/drm/i915/i915_debugfs.c +++ b/drivers/gpu/drm/i915/i915_debugfs.c @@ -1674,6 +1674,85 @@ static int i915_context_status(struct seq_file *m, void *unused) return 0; } +static int i915_execlists(struct seq_file *m, void *data) +{ + struct drm_info_node *node = (struct drm_info_node *) m->private; + struct drm_device *dev = node->minor->dev; + struct drm_i915_private *dev_priv = dev->dev_private; + struct intel_engine_cs *ring; + u32 status_pointer; + u8 read_pointer; + u8 write_pointer; + u32 status; + u32 ctx_id; + struct list_head *cursor; + int ring_id, i; + int ret; + + if (!i915.enable_execlists) { + seq_printf(m, "Logical Ring Contexts are disabled\n"); + return 0; + } + + ret = mutex_lock_interruptible(&dev->struct_mutex); + if (ret) + return ret; + + for_each_ring(ring, dev_priv, ring_id) { + struct intel_ctx_submit_request *head_req = NULL; + int count = 0; + unsigned long flags; + + seq_printf(m, "%s\n", ring->name); + + status = I915_READ(RING_EXECLIST_STATUS(ring)); + ctx_id = I915_READ(RING_EXECLIST_STATUS(ring) + 4); + seq_printf(m, "\tExeclist status: 0x%08X, context: %u\n", + status, ctx_id); + + status_pointer = I915_READ(RING_CONTEXT_STATUS_PTR(ring)); + seq_printf(m, "\tStatus pointer: 0x%08X\n", status_pointer); + + read_pointer = ring->next_context_status_buffer; + write_pointer = status_pointer & 0x07; + if (read_pointer > write_pointer) + write_pointer += 6; + seq_printf(m, "\tRead pointer: 0x%08X, write pointer 0x%08X\n", + read_pointer, write_pointer); + + for (i = 0; i < 6; i++) { + status = I915_READ(RING_CONTEXT_STATUS_BUF(ring) + 8*i); + ctx_id = I915_READ(RING_CONTEXT_STATUS_BUF(ring) + 8*i + 4); + + seq_printf(m, "\tStatus buffer %d: 0x%08X, context: %u\n", + i, status, ctx_id); + } + + spin_lock_irqsave(&ring->execlist_lock, flags); + list_for_each(cursor, &ring->execlist_queue) + count++; + head_req = list_first_entry_or_null(&ring->execlist_queue, + struct intel_ctx_submit_request, execlist_link); + spin_unlock_irqrestore(&ring->execlist_lock, flags); + + seq_printf(m, "\t%d requests in queue\n", count); + if (head_req) { + struct drm_i915_gem_object *ctx_obj; + + ctx_obj = head_req->ctx->engine[ring_id].state; + seq_printf(m, "\tHead request id: %u\n", + intel_execlists_ctx_id(ctx_obj)); + seq_printf(m, "\tHead request tail: %u\n", head_req->tail); + } + + seq_putc(m, '\n'); + } + + mutex_unlock(&dev->struct_mutex); + + return 0; +} + static int i915_gen6_forcewake_count_info(struct seq_file *m, void *data) { struct drm_info_node *node = m->private; @@ -3899,6 +3978,7 @@ static const struct drm_info_list i915_debugfs_list[] = { {"i915_opregion", i915_opregion, 0}, {"i915_gem_framebuffer", i915_gem_framebuffer_info, 0}, {"i915_context_status", i915_context_status, 0}, + {"i915_execlists", i915_execlists, 0}, {"i915_gen6_forcewake_count", i915_gen6_forcewake_count_info, 0}, {"i915_swizzle_info", i915_swizzle_info, 0}, {"i915_ppgtt_info", i915_ppgtt_info, 0}, diff --git a/drivers/gpu/drm/i915/intel_lrc.c b/drivers/gpu/drm/i915/intel_lrc.c index 829b15d..8056fa4 100644 --- a/drivers/gpu/drm/i915/intel_lrc.c +++ b/drivers/gpu/drm/i915/intel_lrc.c @@ -46,12 +46,6 @@ #define GEN8_LR_CONTEXT_ALIGN 4096 -#define RING_ELSP(ring) ((ring)->mmio_base+0x230) -#define RING_EXECLIST_STATUS(ring) ((ring)->mmio_base+0x234) -#define RING_CONTEXT_CONTROL(ring) ((ring)->mmio_base+0x244) -#define RING_CONTEXT_STATUS_BUF(ring) ((ring)->mmio_base+0x370) -#define RING_CONTEXT_STATUS_PTR(ring) ((ring)->mmio_base+0x3a0) - #define RING_EXECLIST_QFULL (1 << 0x2) #define RING_EXECLIST1_VALID (1 << 0x3) #define RING_EXECLIST0_VALID (1 << 0x4) diff --git a/drivers/gpu/drm/i915/intel_lrc.h b/drivers/gpu/drm/i915/intel_lrc.h index 074b44f..f3b921b 100644 --- a/drivers/gpu/drm/i915/intel_lrc.h +++ b/drivers/gpu/drm/i915/intel_lrc.h @@ -24,6 +24,13 @@ #ifndef _INTEL_LRC_H_ #define _INTEL_LRC_H_ +/* Execlists regs */ +#define RING_ELSP(ring) ((ring)->mmio_base+0x230) +#define RING_EXECLIST_STATUS(ring) ((ring)->mmio_base+0x234) +#define RING_CONTEXT_CONTROL(ring) ((ring)->mmio_base+0x244) +#define RING_CONTEXT_STATUS_BUF(ring) ((ring)->mmio_base+0x370) +#define RING_CONTEXT_STATUS_PTR(ring) ((ring)->mmio_base+0x3a0) + /* Logical Rings */ void intel_logical_ring_stop(struct intel_engine_cs *ring); void intel_logical_ring_cleanup(struct intel_engine_cs *ring);