From patchwork Fri Sep 6 12:23:13 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mika Kuoppala X-Patchwork-Id: 11135197 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id CE7C113BD for ; Fri, 6 Sep 2019 12:23:27 +0000 (UTC) Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id B6329206CD for ; Fri, 6 Sep 2019 12:23:27 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org B6329206CD Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=linux.intel.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=intel-gfx-bounces@lists.freedesktop.org Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 5A9286E284; Fri, 6 Sep 2019 12:23:27 +0000 (UTC) X-Original-To: intel-gfx@lists.freedesktop.org Delivered-To: intel-gfx@lists.freedesktop.org Received: from mga02.intel.com (mga02.intel.com [134.134.136.20]) by gabe.freedesktop.org (Postfix) with ESMTPS id 4F8236E288 for ; Fri, 6 Sep 2019 12:23:24 +0000 (UTC) X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga007.fm.intel.com ([10.253.24.52]) by orsmga101.jf.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 06 Sep 2019 05:23:20 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.64,473,1559545200"; d="scan'208";a="184523372" Received: from rosetta.fi.intel.com ([10.237.72.194]) by fmsmga007.fm.intel.com with ESMTP; 06 Sep 2019 05:23:18 -0700 Received: by rosetta.fi.intel.com (Postfix, from userid 1000) id 8301B84077D; Fri, 6 Sep 2019 15:23:17 +0300 (EEST) From: Mika Kuoppala To: intel-gfx@lists.freedesktop.org Date: Fri, 6 Sep 2019 15:23:13 +0300 Message-Id: <20190906122314.2146-1-mika.kuoppala@linux.intel.com> X-Mailer: git-send-email 2.17.1 Subject: [Intel-gfx] [PATCH 1/2] drm/i915: Use engine relative LRIs on context setup X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Intel graphics driver community testing & development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Lucas De Marchi MIME-Version: 1.0 Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" Daniele pointed out that relative mmio works differently in on context restore. Instead of adding the engine mmio base to offset, it masks out the base and adds bits [12:2] to current engine base. This should allow us to construct context register state to be applicable to all instances, including virtual. And avoid the trouble of updating the registers on virtual instances when submitting work. Bspec: 20206 Cc: Chris Wilson Cc: Tvrtko Ursulin Cc: Michal Wajdeczko Cc: Joonas Lahtinen Cc: Lucas De Marchi Cc: John Harrison Suggested-by: Daniele Ceraolo Spurio Signed-off-by: Mika Kuoppala --- drivers/gpu/drm/i915/gt/intel_engine_types.h | 7 +++++ drivers/gpu/drm/i915/gt/intel_gpu_commands.h | 2 ++ drivers/gpu/drm/i915/gt/intel_lrc.c | 27 ++++++++++++++------ 3 files changed, 28 insertions(+), 8 deletions(-) diff --git a/drivers/gpu/drm/i915/gt/intel_engine_types.h b/drivers/gpu/drm/i915/gt/intel_engine_types.h index 15e02cb58a67..943f0663837e 100644 --- a/drivers/gpu/drm/i915/gt/intel_engine_types.h +++ b/drivers/gpu/drm/i915/gt/intel_engine_types.h @@ -481,6 +481,7 @@ struct intel_engine_cs { #define I915_ENGINE_HAS_SEMAPHORES BIT(3) #define I915_ENGINE_NEEDS_BREADCRUMB_TASKLET BIT(4) #define I915_ENGINE_IS_VIRTUAL BIT(5) +#define I915_ENGINE_HAS_RELATIVE_MMIO BIT(6) unsigned int flags; /* @@ -576,6 +577,12 @@ intel_engine_is_virtual(const struct intel_engine_cs *engine) return engine->flags & I915_ENGINE_IS_VIRTUAL; } +static inline bool +intel_engine_has_relative_mmio(const struct intel_engine_cs * const engine) +{ + return engine->flags & I915_ENGINE_HAS_RELATIVE_MMIO; +} + #define instdone_has_slice(dev_priv___, sseu___, slice___) \ ((IS_GEN(dev_priv___, 7) ? 1 : ((sseu___)->slice_mask)) & BIT(slice___)) diff --git a/drivers/gpu/drm/i915/gt/intel_gpu_commands.h b/drivers/gpu/drm/i915/gt/intel_gpu_commands.h index 86e00a2db8a4..e1b87a516ef8 100644 --- a/drivers/gpu/drm/i915/gt/intel_gpu_commands.h +++ b/drivers/gpu/drm/i915/gt/intel_gpu_commands.h @@ -132,6 +132,8 @@ * address/value pairs. Don't overdue it, though, x <= 2^4 must hold! */ #define MI_LOAD_REGISTER_IMM(x) MI_INSTR(0x22, 2*(x)-1) +/* Gen11+. addr = base + (ctx_restore ? offset & GENMASK(12:2) : offset) */ +#define MI_LRI_CS_MMIO (1<<19) #define MI_LRI_FORCE_POSTED (1<<12) #define MI_STORE_REGISTER_MEM MI_INSTR(0x24, 1) #define MI_STORE_REGISTER_MEM_GEN8 MI_INSTR(0x24, 2) diff --git a/drivers/gpu/drm/i915/gt/intel_lrc.c b/drivers/gpu/drm/i915/gt/intel_lrc.c index 87b7473a6dfb..6c68ed2bf3d2 100644 --- a/drivers/gpu/drm/i915/gt/intel_lrc.c +++ b/drivers/gpu/drm/i915/gt/intel_lrc.c @@ -1214,7 +1214,10 @@ static void execlists_dequeue(struct intel_engine_cs *engine) unsigned int n; GEM_BUG_ON(READ_ONCE(ve->context.inflight)); - virtual_update_register_offsets(regs, engine); + + if (!intel_engine_has_relative_mmio(engine)) + virtual_update_register_offsets(regs, + engine); if (!list_empty(&ve->context.signals)) virtual_xfer_breadcrumbs(ve, engine); @@ -2939,6 +2942,10 @@ void intel_execlists_set_default_submission(struct intel_engine_cs *engine) if (HAS_LOGICAL_RING_PREEMPTION(engine->i915)) engine->flags |= I915_ENGINE_HAS_PREEMPTION; } + + engine->flags |= (engine->class != COPY_ENGINE_CLASS && + INTEL_GEN(engine->i915) >= 11) ? + I915_ENGINE_HAS_RELATIVE_MMIO : 0; } static void execlists_destroy(struct intel_engine_cs *engine) @@ -3130,8 +3137,10 @@ static void execlists_init_reg_state(u32 *regs, struct intel_ring *ring) { struct i915_ppgtt *ppgtt = vm_alias(ce->vm); - bool rcs = engine->class == RENDER_CLASS; - u32 base = engine->mmio_base; + const bool rcs = engine->class == RENDER_CLASS; + const u32 base = engine->mmio_base; + const u32 lri_base = intel_engine_has_relative_mmio(engine) ? + MI_LRI_CS_MMIO : 0; /* * A context is actually a big batch buffer with several @@ -3144,7 +3153,7 @@ static void execlists_init_reg_state(u32 *regs, * Must keep consistent with virtual_update_register_offsets(). */ regs[CTX_LRI_HEADER_0] = MI_LOAD_REGISTER_IMM(rcs ? 14 : 11) | - MI_LRI_FORCE_POSTED; + MI_LRI_FORCE_POSTED | lri_base; CTX_REG(regs, CTX_CONTEXT_CONTROL, RING_CONTEXT_CONTROL(base), _MASKED_BIT_DISABLE(CTX_CTRL_ENGINE_CTX_RESTORE_INHIBIT) | @@ -3191,7 +3200,8 @@ static void execlists_init_reg_state(u32 *regs, } } - regs[CTX_LRI_HEADER_1] = MI_LOAD_REGISTER_IMM(9) | MI_LRI_FORCE_POSTED; + regs[CTX_LRI_HEADER_1] = + MI_LOAD_REGISTER_IMM(9) | MI_LRI_FORCE_POSTED | lri_base; CTX_REG(regs, CTX_CTX_TIMESTAMP, RING_CTX_TIMESTAMP(base), 0); /* PDP values well be assigned later if needed */ @@ -3218,7 +3228,7 @@ static void execlists_init_reg_state(u32 *regs, } if (rcs) { - regs[CTX_LRI_HEADER_2] = MI_LOAD_REGISTER_IMM(1); + regs[CTX_LRI_HEADER_2] = MI_LOAD_REGISTER_IMM(1) | lri_base; CTX_REG(regs, CTX_R_PWR_CLK_STATE, GEN8_R_PWR_CLK_STATE, 0); } @@ -3411,8 +3421,9 @@ static void virtual_engine_initial_hint(struct virtual_engine *ve) return; swap(ve->siblings[swp], ve->siblings[0]); - virtual_update_register_offsets(ve->context.lrc_reg_state, - ve->siblings[0]); + if (!intel_engine_has_relative_mmio(ve->siblings[0])) + virtual_update_register_offsets(ve->context.lrc_reg_state, + ve->siblings[0]); } static int virtual_context_pin(struct intel_context *ce)