From patchwork Tue Nov 11 09:42:52 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Nick Hoath X-Patchwork-Id: 5271871 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 6A9D5C11AC for ; Tue, 11 Nov 2014 09:44:27 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 18E2F20142 for ; Tue, 11 Nov 2014 09:44:26 +0000 (UTC) Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) by mail.kernel.org (Postfix) with ESMTP id A8ABD20165 for ; Tue, 11 Nov 2014 09:44:24 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 0F8C06E402; Tue, 11 Nov 2014 01:44:24 -0800 (PST) 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 999066E09C for ; Tue, 11 Nov 2014 01:44:21 -0800 (PST) Received: from orsmga002.jf.intel.com ([10.7.209.21]) by orsmga102.jf.intel.com with ESMTP; 11 Nov 2014 01:42:29 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.07,359,1413270000"; d="scan'208";a="634958010" Received: from nthoath-linux.isw.intel.com ([10.102.226.65]) by orsmga002.jf.intel.com with ESMTP; 11 Nov 2014 01:44:20 -0800 From: Nick Hoath To: intel-gfx@lists.freedesktop.org Date: Tue, 11 Nov 2014 09:42:52 +0000 Message-Id: <1415698972-31994-3-git-send-email-nicholas.hoath@intel.com> X-Mailer: git-send-email 2.1.1 In-Reply-To: <1415698972-31994-1-git-send-email-nicholas.hoath@intel.com> References: <1415698972-31994-1-git-send-email-nicholas.hoath@intel.com> Subject: [Intel-gfx] [RFC 3/3] drm/i915: Remove FIXME_lrc_ctx backpointer X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.18 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=-4.7 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 The first pass implementation of execlists required a backpointer to the context to be held in the intel_ringbuffer. However the context pointer is available higher in the call stack. Remove the backpointer from the ring buffer structure and instead pass it down through the call stack. v2: Integrate this changeset with the removal of duplicate request/execlist queue item members. Signed-off-by: Nick Hoath Issue: VIZ-4268 --- drivers/gpu/drm/i915/i915_gem.c | 7 ++-- drivers/gpu/drm/i915/intel_lrc.c | 67 +++++++++++++++++++++------------ drivers/gpu/drm/i915/intel_lrc.h | 8 +++- drivers/gpu/drm/i915/intel_ringbuffer.h | 12 +++--- 4 files changed, 56 insertions(+), 38 deletions(-) diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c index f55bfdc..11bd207 100644 --- a/drivers/gpu/drm/i915/i915_gem.c +++ b/drivers/gpu/drm/i915/i915_gem.c @@ -2370,8 +2370,7 @@ int __i915_add_request(struct intel_engine_cs *ring, return -ENOMEM; if (i915.enable_execlists) { - struct intel_context *ctx = request->ctx; - ringbuf = ctx->engine[ring->id].ringbuf; + ringbuf = request->ctx->engine[ring->id].ringbuf; } else ringbuf = ring->buffer; @@ -2384,7 +2383,7 @@ int __i915_add_request(struct intel_engine_cs *ring, * what. */ if (i915.enable_execlists) { - ret = logical_ring_flush_all_caches(ringbuf); + ret = logical_ring_flush_all_caches(ringbuf, request->ctx); if (ret) return ret; } else { @@ -2406,7 +2405,7 @@ int __i915_add_request(struct intel_engine_cs *ring, request_ring_position = intel_ring_get_tail(ringbuf); if (i915.enable_execlists) { - ret = ring->emit_request(ringbuf, request); + ret = ring->emit_request(ringbuf, request->ctx, request); if (ret) return ret; } else { diff --git a/drivers/gpu/drm/i915/intel_lrc.c b/drivers/gpu/drm/i915/intel_lrc.c index 3daf8ea..792186e 100644 --- a/drivers/gpu/drm/i915/intel_lrc.c +++ b/drivers/gpu/drm/i915/intel_lrc.c @@ -555,6 +555,10 @@ static int execlists_context_queue(struct intel_engine_cs *ring, request->ctx = to; request->ring = ring; } + else + { + WARN_ON(to != request->ctx); + } req->request = request; i915_gem_request_reference(request); i915_gem_context_reference(req->request->ctx); @@ -591,7 +595,8 @@ static int execlists_context_queue(struct intel_engine_cs *ring, return 0; } -static int logical_ring_invalidate_all_caches(struct intel_ringbuffer *ringbuf) +static int logical_ring_invalidate_all_caches(struct intel_ringbuffer *ringbuf, + struct intel_context *ctx) { struct intel_engine_cs *ring = ringbuf->ring; uint32_t flush_domains; @@ -601,7 +606,8 @@ static int logical_ring_invalidate_all_caches(struct intel_ringbuffer *ringbuf) if (ring->gpu_caches_dirty) flush_domains = I915_GEM_GPU_DOMAINS; - ret = ring->emit_flush(ringbuf, I915_GEM_GPU_DOMAINS, flush_domains); + ret = ring->emit_flush(ringbuf, ctx, + I915_GEM_GPU_DOMAINS, flush_domains); if (ret) return ret; @@ -610,6 +616,7 @@ static int logical_ring_invalidate_all_caches(struct intel_ringbuffer *ringbuf) } static int execlists_move_to_gpu(struct intel_ringbuffer *ringbuf, + struct intel_context *ctx, struct list_head *vmas) { struct intel_engine_cs *ring = ringbuf->ring; @@ -637,7 +644,7 @@ static int execlists_move_to_gpu(struct intel_ringbuffer *ringbuf, /* Unconditionally invalidate gpu caches and ensure that we do flush * any residual writes from the previous batch. */ - return logical_ring_invalidate_all_caches(ringbuf); + return logical_ring_invalidate_all_caches(ringbuf, ctx); } /** @@ -717,13 +724,13 @@ int intel_execlists_submission(struct drm_device *dev, struct drm_file *file, return -EINVAL; } - ret = execlists_move_to_gpu(ringbuf, vmas); + ret = execlists_move_to_gpu(ringbuf, ctx, vmas); if (ret) return ret; if (ring == &dev_priv->ring[RCS] && instp_mode != dev_priv->relative_constants_mode) { - ret = intel_logical_ring_begin(ringbuf, 4); + ret = intel_logical_ring_begin(ringbuf, ctx, 4); if (ret) return ret; @@ -736,7 +743,7 @@ int intel_execlists_submission(struct drm_device *dev, struct drm_file *file, dev_priv->relative_constants_mode = instp_mode; } - ret = ring->emit_bb_start(ringbuf, exec_start, flags); + ret = ring->emit_bb_start(ringbuf, ctx, exec_start, flags); if (ret) return ret; @@ -768,7 +775,8 @@ void intel_logical_ring_stop(struct intel_engine_cs *ring) I915_WRITE_MODE(ring, _MASKED_BIT_DISABLE(STOP_RING)); } -int logical_ring_flush_all_caches(struct intel_ringbuffer *ringbuf) +int logical_ring_flush_all_caches(struct intel_ringbuffer *ringbuf, + struct intel_context *ctx) { struct intel_engine_cs *ring = ringbuf->ring; int ret; @@ -776,7 +784,7 @@ int logical_ring_flush_all_caches(struct intel_ringbuffer *ringbuf) if (!ring->gpu_caches_dirty) return 0; - ret = ring->emit_flush(ringbuf, 0, I915_GEM_GPU_DOMAINS); + ret = ring->emit_flush(ringbuf, ctx, 0, I915_GEM_GPU_DOMAINS); if (ret) return ret; @@ -794,10 +802,10 @@ int logical_ring_flush_all_caches(struct intel_ringbuffer *ringbuf) * point, the tail *inside* the context is updated and the ELSP written to. */ void intel_logical_ring_advance_and_submit(struct intel_ringbuffer *ringbuf, + struct intel_context *ctx, struct drm_i915_gem_request *request) { struct intel_engine_cs *ring = ringbuf->ring; - struct intel_context *ctx = ringbuf->FIXME_lrc_ctx; intel_logical_ring_advance(ringbuf); @@ -879,6 +887,7 @@ static int logical_ring_wait_request(struct intel_ringbuffer *ringbuf, } static int logical_ring_wait_for_space(struct intel_ringbuffer *ringbuf, + struct intel_context *ctx, int bytes) { struct intel_engine_cs *ring = ringbuf->ring; @@ -892,7 +901,7 @@ static int logical_ring_wait_for_space(struct intel_ringbuffer *ringbuf, return ret; /* Force the context submission in case we have been skipping it */ - intel_logical_ring_advance_and_submit(ringbuf, NULL); + intel_logical_ring_advance_and_submit(ringbuf, ctx, NULL); /* With GEM the hangcheck timer should kick us out of the loop, * leaving it early runs the risk of corrupting GEM state (due @@ -930,13 +939,14 @@ static int logical_ring_wait_for_space(struct intel_ringbuffer *ringbuf, return ret; } -static int logical_ring_wrap_buffer(struct intel_ringbuffer *ringbuf) +static int logical_ring_wrap_buffer(struct intel_ringbuffer *ringbuf, + struct intel_context *ctx) { uint32_t __iomem *virt; int rem = ringbuf->size - ringbuf->tail; if (ringbuf->space < rem) { - int ret = logical_ring_wait_for_space(ringbuf, rem); + int ret = logical_ring_wait_for_space(ringbuf, ctx, rem); if (ret) return ret; @@ -953,18 +963,19 @@ static int logical_ring_wrap_buffer(struct intel_ringbuffer *ringbuf) return 0; } -static int logical_ring_prepare(struct intel_ringbuffer *ringbuf, int bytes) +static int logical_ring_prepare(struct intel_ringbuffer *ringbuf, + struct intel_context *ctx, int bytes) { int ret; if (unlikely(ringbuf->tail + bytes > ringbuf->effective_size)) { - ret = logical_ring_wrap_buffer(ringbuf); + ret = logical_ring_wrap_buffer(ringbuf, ctx); if (unlikely(ret)) return ret; } if (unlikely(ringbuf->space < bytes)) { - ret = logical_ring_wait_for_space(ringbuf, bytes); + ret = logical_ring_wait_for_space(ringbuf, ctx, bytes); if (unlikely(ret)) return ret; } @@ -985,7 +996,8 @@ static int logical_ring_prepare(struct intel_ringbuffer *ringbuf, int bytes) * * Return: non-zero if the ringbuffer is not ready to be written to. */ -int intel_logical_ring_begin(struct intel_ringbuffer *ringbuf, int num_dwords) +int intel_logical_ring_begin(struct intel_ringbuffer *ringbuf, + struct intel_context *ctx, int num_dwords) { struct intel_engine_cs *ring = ringbuf->ring; struct drm_device *dev = ring->dev; @@ -997,12 +1009,12 @@ int intel_logical_ring_begin(struct intel_ringbuffer *ringbuf, int num_dwords) if (ret) return ret; - ret = logical_ring_prepare(ringbuf, num_dwords * sizeof(uint32_t)); + ret = logical_ring_prepare(ringbuf, ctx, num_dwords * sizeof(uint32_t)); if (ret) return ret; /* Preallocate the olr before touching the ring */ - ret = logical_ring_alloc_request(ring, ringbuf->FIXME_lrc_ctx); + ret = logical_ring_alloc_request(ring, ctx); if (ret) return ret; @@ -1057,12 +1069,13 @@ static int gen8_init_render_ring(struct intel_engine_cs *ring) } static int gen8_emit_bb_start(struct intel_ringbuffer *ringbuf, + struct intel_context *ctx, u64 offset, unsigned flags) { bool ppgtt = !(flags & I915_DISPATCH_SECURE); int ret; - ret = intel_logical_ring_begin(ringbuf, 4); + ret = intel_logical_ring_begin(ringbuf, ctx, 4); if (ret) return ret; @@ -1110,6 +1123,7 @@ static void gen8_logical_ring_put_irq(struct intel_engine_cs *ring) } static int gen8_emit_flush(struct intel_ringbuffer *ringbuf, + struct intel_context *ctx, u32 invalidate_domains, u32 unused) { @@ -1119,7 +1133,7 @@ static int gen8_emit_flush(struct intel_ringbuffer *ringbuf, uint32_t cmd; int ret; - ret = intel_logical_ring_begin(ringbuf, 4); + ret = intel_logical_ring_begin(ringbuf, ctx, 4); if (ret) return ret; @@ -1148,6 +1162,7 @@ static int gen8_emit_flush(struct intel_ringbuffer *ringbuf, } static int gen8_emit_flush_render(struct intel_ringbuffer *ringbuf, + struct intel_context *ctx, u32 invalidate_domains, u32 flush_domains) { @@ -1174,7 +1189,7 @@ static int gen8_emit_flush_render(struct intel_ringbuffer *ringbuf, flags |= PIPE_CONTROL_GLOBAL_GTT_IVB; } - ret = intel_logical_ring_begin(ringbuf, 6); + ret = intel_logical_ring_begin(ringbuf, ctx, 6); if (ret) return ret; @@ -1199,13 +1214,15 @@ static void gen8_set_seqno(struct intel_engine_cs *ring, u32 seqno) intel_write_status_page(ring, I915_GEM_HWS_INDEX, seqno); } -static int gen8_emit_request(struct intel_ringbuffer *ringbuf, struct drm_i915_gem_request *request) +static int gen8_emit_request(struct intel_ringbuffer *ringbuf, + struct intel_context *ctx, + struct drm_i915_gem_request *request) { struct intel_engine_cs *ring = ringbuf->ring; u32 cmd; int ret; - ret = intel_logical_ring_begin(ringbuf, 6); + ret = intel_logical_ring_begin(ringbuf, ctx, 6); if (ret) return ret; @@ -1221,7 +1238,7 @@ static int gen8_emit_request(struct intel_ringbuffer *ringbuf, struct drm_i915_g i915_gem_request_get_seqno(ring->outstanding_lazy_request)); intel_logical_ring_emit(ringbuf, MI_USER_INTERRUPT); intel_logical_ring_emit(ringbuf, MI_NOOP); - intel_logical_ring_advance_and_submit(ringbuf, request); + intel_logical_ring_advance_and_submit(ringbuf, ctx, request); return 0; } @@ -1497,6 +1514,7 @@ int intel_lr_context_render_state_init(struct intel_engine_cs *ring, return 0; ret = ring->emit_bb_start(ringbuf, + ctx, so.ggtt_offset, I915_DISPATCH_SECURE); if (ret) @@ -1746,7 +1764,6 @@ int intel_lr_context_deferred_create(struct intel_context *ctx, } ringbuf->ring = ring; - ringbuf->FIXME_lrc_ctx = ctx; ringbuf->size = 32 * PAGE_SIZE; ringbuf->effective_size = ringbuf->size; diff --git a/drivers/gpu/drm/i915/intel_lrc.h b/drivers/gpu/drm/i915/intel_lrc.h index 76141ce..bc6ff0d 100644 --- a/drivers/gpu/drm/i915/intel_lrc.h +++ b/drivers/gpu/drm/i915/intel_lrc.h @@ -36,8 +36,10 @@ void intel_logical_ring_stop(struct intel_engine_cs *ring); void intel_logical_ring_cleanup(struct intel_engine_cs *ring); int intel_logical_rings_init(struct drm_device *dev); -int logical_ring_flush_all_caches(struct intel_ringbuffer *ringbuf); +int logical_ring_flush_all_caches(struct intel_ringbuffer *ringbuf, + struct intel_context *ctx); void intel_logical_ring_advance_and_submit(struct intel_ringbuffer *ringbuf, + struct intel_context *ctx, struct drm_i915_gem_request *request); /** * intel_logical_ring_advance() - advance the ringbuffer tail @@ -60,7 +62,9 @@ static inline void intel_logical_ring_emit(struct intel_ringbuffer *ringbuf, iowrite32(data, ringbuf->virtual_start + ringbuf->tail); ringbuf->tail += 4; } -int intel_logical_ring_begin(struct intel_ringbuffer *ringbuf, int num_dwords); +int intel_logical_ring_begin(struct intel_ringbuffer *ringbuf, + struct intel_context *ctx, + int num_dwords); /* Logical Ring Contexts */ int intel_lr_context_render_state_init(struct intel_engine_cs *ring, diff --git a/drivers/gpu/drm/i915/intel_ringbuffer.h b/drivers/gpu/drm/i915/intel_ringbuffer.h index b802fe7..8515e59 100644 --- a/drivers/gpu/drm/i915/intel_ringbuffer.h +++ b/drivers/gpu/drm/i915/intel_ringbuffer.h @@ -99,13 +99,6 @@ struct intel_ringbuffer { struct intel_engine_cs *ring; - /* - * FIXME: This backpointer is an artifact of the history of how the - * execlist patches came into being. It will get removed once the basic - * code has landed. - */ - struct intel_context *FIXME_lrc_ctx; - u32 head; u32 tail; int space; @@ -123,6 +116,8 @@ struct intel_ringbuffer { u32 last_retired_head; }; +struct intel_context; + struct intel_engine_cs { const char *name; enum intel_ring_id { @@ -238,11 +233,14 @@ struct intel_engine_cs { u8 next_context_status_buffer; u32 irq_keep_mask; /* bitmask for interrupts that should not be masked */ int (*emit_request)(struct intel_ringbuffer *ringbuf, + struct intel_context *ctx, struct drm_i915_gem_request *request); int (*emit_flush)(struct intel_ringbuffer *ringbuf, + struct intel_context *ctx, u32 invalidate_domains, u32 flush_domains); int (*emit_bb_start)(struct intel_ringbuffer *ringbuf, + struct intel_context *ctx, u64 offset, unsigned flags); /**