From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 0BA25C433E1 for ; Mon, 1 Jun 2020 07:25:27 +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 E08F62076B for ; Mon, 1 Jun 2020 07:25:26 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org E08F62076B Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=chris-wilson.co.uk 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 0EC306E153; Mon, 1 Jun 2020 07:25:09 +0000 (UTC) Received: from fireflyinternet.com (mail.fireflyinternet.com [109.228.58.192]) by gabe.freedesktop.org (Postfix) with ESMTPS id 4B4CE89E63 for ; Mon, 1 Jun 2020 07:25:06 +0000 (UTC) X-Default-Received-SPF: pass (skip=forwardok (res=PASS)) x-ip-name=78.156.65.138; Received: from build.alporthouse.com (unverified [78.156.65.138]) by fireflyinternet.com (Firefly Internet (M1)) with ESMTP id 21356607-1500050 for multiple; Mon, 01 Jun 2020 08:24:52 +0100 From: Chris Wilson To: intel-gfx@lists.freedesktop.org Date: Mon, 1 Jun 2020 08:24:17 +0100 Message-Id: <20200601072446.19548-7-chris@chris-wilson.co.uk> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20200601072446.19548-1-chris@chris-wilson.co.uk> References: <20200601072446.19548-1-chris@chris-wilson.co.uk> MIME-Version: 1.0 Subject: [Intel-gfx] [PATCH 07/36] drm/i915/gt: Support creation of 'internal' rings X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Intel graphics driver community testing & development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Chris Wilson Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" To support legacy ring buffer scheduling, we want a virtual ringbuffer for each client. These rings are purely for holding the requests as they are being constructed on the CPU and never accessed by the GPU, so they should not be bound into the GGTT, and we can use plain old WB mapped pages. As they are not bound, we need to nerf a few assumptions that a rq->ring is in the GGTT. Signed-off-by: Chris Wilson --- drivers/gpu/drm/i915/gt/intel_context.c | 2 +- drivers/gpu/drm/i915/gt/intel_engine_cs.c | 17 ++---- drivers/gpu/drm/i915/gt/intel_ring.c | 63 ++++++++++++++-------- drivers/gpu/drm/i915/gt/intel_ring.h | 12 ++++- drivers/gpu/drm/i915/gt/intel_ring_types.h | 2 + 5 files changed, 57 insertions(+), 39 deletions(-) diff --git a/drivers/gpu/drm/i915/gt/intel_context.c b/drivers/gpu/drm/i915/gt/intel_context.c index e4aece20bc80..fd71977c010a 100644 --- a/drivers/gpu/drm/i915/gt/intel_context.c +++ b/drivers/gpu/drm/i915/gt/intel_context.c @@ -127,7 +127,7 @@ int __intel_context_do_pin(struct intel_context *ce) goto err_active; CE_TRACE(ce, "pin ring:{start:%08x, head:%04x, tail:%04x}\n", - i915_ggtt_offset(ce->ring->vma), + intel_ring_address(ce->ring), ce->ring->head, ce->ring->tail); smp_mb__before_atomic(); /* flush pin before it is visible */ diff --git a/drivers/gpu/drm/i915/gt/intel_engine_cs.c b/drivers/gpu/drm/i915/gt/intel_engine_cs.c index c8c14981eb5d..64e13c074708 100644 --- a/drivers/gpu/drm/i915/gt/intel_engine_cs.c +++ b/drivers/gpu/drm/i915/gt/intel_engine_cs.c @@ -1261,7 +1261,7 @@ static int print_ring(char *buf, int sz, struct i915_request *rq) len = scnprintf(buf, sz, "ring:{start:%08x, hwsp:%08x, seqno:%08x, runtime:%llums}, ", - i915_ggtt_offset(rq->ring->vma), + intel_ring_address(rq->ring), tl ? tl->hwsp_offset : 0, hwsp_seqno(rq), DIV_ROUND_CLOSEST_ULL(intel_context_get_total_runtime_ns(rq->context), @@ -1542,7 +1542,7 @@ void intel_engine_dump(struct intel_engine_cs *engine, print_request(m, rq, "\t\tactive "); drm_printf(m, "\t\tring->start: 0x%08x\n", - i915_ggtt_offset(rq->ring->vma)); + intel_ring_address(rq->ring)); drm_printf(m, "\t\tring->head: 0x%08x\n", rq->ring->head); drm_printf(m, "\t\tring->tail: 0x%08x\n", @@ -1621,13 +1621,6 @@ ktime_t intel_engine_get_busy_time(struct intel_engine_cs *engine) return total; } -static bool match_ring(struct i915_request *rq) -{ - u32 ring = ENGINE_READ(rq->engine, RING_START); - - return ring == i915_ggtt_offset(rq->ring->vma); -} - struct i915_request * intel_engine_find_active_request(struct intel_engine_cs *engine) { @@ -1667,11 +1660,7 @@ intel_engine_find_active_request(struct intel_engine_cs *engine) continue; if (!i915_request_started(request)) - continue; - - /* More than one preemptible request may match! */ - if (!match_ring(request)) - continue; + break; active = request; break; diff --git a/drivers/gpu/drm/i915/gt/intel_ring.c b/drivers/gpu/drm/i915/gt/intel_ring.c index 8cda1b7e17ba..438637996ab5 100644 --- a/drivers/gpu/drm/i915/gt/intel_ring.c +++ b/drivers/gpu/drm/i915/gt/intel_ring.c @@ -24,33 +24,42 @@ unsigned int intel_ring_update_space(struct intel_ring *ring) int intel_ring_pin(struct intel_ring *ring) { struct i915_vma *vma = ring->vma; - unsigned int flags; void *addr; int ret; if (atomic_fetch_inc(&ring->pin_count)) return 0; - /* Ring wraparound at offset 0 sometimes hangs. No idea why. */ - flags = PIN_OFFSET_BIAS | i915_ggtt_pin_bias(vma); + if (!(ring->flags & INTEL_RING_CREATE_INTERNAL)) { + unsigned int pin; - if (vma->obj->stolen) - flags |= PIN_MAPPABLE; - else - flags |= PIN_HIGH; + /* Ring wraparound at offset 0 sometimes hangs. No idea why. */ + pin |= PIN_OFFSET_BIAS | i915_ggtt_pin_bias(vma); - ret = i915_ggtt_pin(vma, 0, flags); - if (unlikely(ret)) - goto err_unpin; + if (vma->obj->stolen) + pin |= PIN_MAPPABLE; + else + pin |= PIN_HIGH; - if (i915_vma_is_map_and_fenceable(vma)) - addr = (void __force *)i915_vma_pin_iomap(vma); - else - addr = i915_gem_object_pin_map(vma->obj, - i915_coherent_map_type(vma->vm->i915)); - if (IS_ERR(addr)) { - ret = PTR_ERR(addr); - goto err_ring; + ret = i915_ggtt_pin(vma, 0, pin); + if (unlikely(ret)) + goto err_unpin; + + if (i915_vma_is_map_and_fenceable(vma)) + addr = (void __force *)i915_vma_pin_iomap(vma); + else + addr = i915_gem_object_pin_map(vma->obj, + i915_coherent_map_type(vma->vm->i915)); + if (IS_ERR(addr)) { + ret = PTR_ERR(addr); + goto err_ring; + } + } else { + addr = i915_gem_object_pin_map(vma->obj, I915_MAP_WB); + if (IS_ERR(addr)) { + ret = PTR_ERR(addr); + goto err_ring; + } } i915_vma_make_unshrinkable(vma); @@ -91,10 +100,12 @@ void intel_ring_unpin(struct intel_ring *ring) i915_gem_object_unpin_map(vma->obj); i915_vma_make_purgeable(vma); - i915_vma_unpin(vma); + if (!(ring->flags & INTEL_RING_CREATE_INTERNAL)) + i915_vma_unpin(vma); } -static struct i915_vma *create_ring_vma(struct i915_ggtt *ggtt, int size) +static struct i915_vma * +create_ring_vma(struct i915_ggtt *ggtt, int size, unsigned int flags) { struct i915_address_space *vm = &ggtt->vm; struct drm_i915_private *i915 = vm->i915; @@ -102,7 +113,8 @@ static struct i915_vma *create_ring_vma(struct i915_ggtt *ggtt, int size) struct i915_vma *vma; obj = ERR_PTR(-ENODEV); - if (i915_ggtt_has_aperture(ggtt)) + if (!(flags & INTEL_RING_CREATE_INTERNAL) && + i915_ggtt_has_aperture(ggtt)) obj = i915_gem_object_create_stolen(i915, size); if (IS_ERR(obj)) obj = i915_gem_object_create_internal(i915, size); @@ -128,12 +140,14 @@ static struct i915_vma *create_ring_vma(struct i915_ggtt *ggtt, int size) } struct intel_ring * -intel_engine_create_ring(struct intel_engine_cs *engine, int size) +intel_engine_create_ring(struct intel_engine_cs *engine, unsigned int size) { struct drm_i915_private *i915 = engine->i915; + unsigned int flags = size & GENMASK(11, 0); struct intel_ring *ring; struct i915_vma *vma; + size ^= flags; GEM_BUG_ON(!is_power_of_2(size)); GEM_BUG_ON(RING_CTL_SIZE(size) & ~RING_NR_PAGES); @@ -142,8 +156,10 @@ intel_engine_create_ring(struct intel_engine_cs *engine, int size) return ERR_PTR(-ENOMEM); kref_init(&ring->ref); + ring->size = size; ring->wrap = BITS_PER_TYPE(ring->size) - ilog2(size); + ring->flags = flags; /* * Workaround an erratum on the i830 which causes a hang if @@ -156,11 +172,12 @@ intel_engine_create_ring(struct intel_engine_cs *engine, int size) intel_ring_update_space(ring); - vma = create_ring_vma(engine->gt->ggtt, size); + vma = create_ring_vma(engine->gt->ggtt, size, flags); if (IS_ERR(vma)) { kfree(ring); return ERR_CAST(vma); } + ring->vma = vma; return ring; diff --git a/drivers/gpu/drm/i915/gt/intel_ring.h b/drivers/gpu/drm/i915/gt/intel_ring.h index cc0ebca65167..d022fa209325 100644 --- a/drivers/gpu/drm/i915/gt/intel_ring.h +++ b/drivers/gpu/drm/i915/gt/intel_ring.h @@ -9,12 +9,14 @@ #include "i915_gem.h" /* GEM_BUG_ON */ #include "i915_request.h" +#include "i915_vma.h" #include "intel_ring_types.h" struct intel_engine_cs; struct intel_ring * -intel_engine_create_ring(struct intel_engine_cs *engine, int size); +intel_engine_create_ring(struct intel_engine_cs *engine, unsigned int size); +#define INTEL_RING_CREATE_INTERNAL BIT(0) u32 *intel_ring_begin(struct i915_request *rq, unsigned int num_dwords); int intel_ring_cacheline_align(struct i915_request *rq); @@ -137,4 +139,12 @@ __intel_ring_space(unsigned int head, unsigned int tail, unsigned int size) return (head - tail - CACHELINE_BYTES) & (size - 1); } +static inline u32 intel_ring_address(const struct intel_ring *ring) +{ + if (ring->flags & INTEL_RING_CREATE_INTERNAL) + return -1; + + return i915_ggtt_offset(ring->vma); +} + #endif /* INTEL_RING_H */ diff --git a/drivers/gpu/drm/i915/gt/intel_ring_types.h b/drivers/gpu/drm/i915/gt/intel_ring_types.h index 1a189ea00fd8..d927deafcb33 100644 --- a/drivers/gpu/drm/i915/gt/intel_ring_types.h +++ b/drivers/gpu/drm/i915/gt/intel_ring_types.h @@ -47,6 +47,8 @@ struct intel_ring { u32 size; u32 wrap; u32 effective_size; + + unsigned long flags; }; #endif /* INTEL_RING_TYPES_H */ -- 2.20.1 _______________________________________________ Intel-gfx mailing list Intel-gfx@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/intel-gfx