From patchwork Wed Jul 1 15:27:32 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Michel Thierry X-Patchwork-Id: 6704281 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 [198.145.29.136]) by patchwork2.web.kernel.org (Postfix) with ESMTP id E23E6C05AC for ; Wed, 1 Jul 2015 15:27:58 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 0EE27203DC for ; Wed, 1 Jul 2015 15:27:58 +0000 (UTC) Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) by mail.kernel.org (Postfix) with ESMTP id 02F97203DA for ; Wed, 1 Jul 2015 15:27:57 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 626A089624; Wed, 1 Jul 2015 08:27:56 -0700 (PDT) X-Original-To: intel-gfx@lists.freedesktop.org Delivered-To: intel-gfx@lists.freedesktop.org Received: from mga11.intel.com (mga11.intel.com [192.55.52.93]) by gabe.freedesktop.org (Postfix) with ESMTP id 9FFCC7A083 for ; Wed, 1 Jul 2015 08:27:54 -0700 (PDT) Received: from orsmga001.jf.intel.com ([10.7.209.18]) by fmsmga102.fm.intel.com with ESMTP; 01 Jul 2015 08:27:54 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.15,386,1432623600"; d="scan'208";a="721077263" Received: from michelth-linux2.isw.intel.com ([10.102.226.189]) by orsmga001.jf.intel.com with ESMTP; 01 Jul 2015 08:27:53 -0700 From: Michel Thierry To: intel-gfx@lists.freedesktop.org Date: Wed, 1 Jul 2015 16:27:32 +0100 Message-Id: <1435764453-11954-17-git-send-email-michel.thierry@intel.com> X-Mailer: git-send-email 2.4.5 In-Reply-To: <1435764453-11954-1-git-send-email-michel.thierry@intel.com> References: <1433954816-13787-1-git-send-email-michel.thierry@intel.com> <1435764453-11954-1-git-send-email-michel.thierry@intel.com> Cc: akash.goel@intel.com, Ben Widawsky Subject: [Intel-gfx] [PATCH v3 16/17] drm/i915: Wa32bitGeneralStateOffset & Wa32bitInstructionBaseOffset 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=-4.8 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 There are some allocations that must be only referenced by 32-bit offsets. To limit the chances of having the first 4GB already full, objects not requiring this workaround use DRM_MM_SEARCH_BELOW/ DRM_MM_CREATE_TOP flags In specific, any resource used with flat/heapless (0x00000000-0xfffff000) General State Heap (GSH) or Intructions State Heap (ISH) must be in a 32-bit range, because the General State Offset and Instruction State Offset are limited to 32-bits. Objects must have EXEC_OBJECT_SUPPORTS_48B_ADDRESS flag to indicate if they can be allocated above the 32-bit address range. To limit the chances of having the first 4GB already full, objects will use DRM_MM_SEARCH_BELOW + DRM_MM_CREATE_TOP flags when possible. v2: Changed flag logic from neeeds_32b, to supports_48b. v3: Moved 48-bit support flag back to exec_object. (Chris, Daniel) v4: Split pin flags into PIN_ZONE_4G and PIN_HIGH; update PIN_OFFSET_MASK to use last PIN_ defined instead of hard-coded value; use correct limit check in eb_vma_misplaced. (Chris) Cc: Chris Wilson Cc: Ben Widawsky Signed-off-by: Michel Thierry Reviewed-by: Chris Wilson --- drivers/gpu/drm/i915/i915_drv.h | 4 +++- drivers/gpu/drm/i915/i915_gem.c | 17 +++++++++++++++-- drivers/gpu/drm/i915/i915_gem_execbuffer.c | 10 ++++++++++ include/uapi/drm/i915_drm.h | 3 ++- 4 files changed, 30 insertions(+), 4 deletions(-) diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h index c720a18..aac51fb 100644 --- a/drivers/gpu/drm/i915/i915_drv.h +++ b/drivers/gpu/drm/i915/i915_drv.h @@ -2765,7 +2765,9 @@ void i915_gem_vma_destroy(struct i915_vma *vma); #define PIN_OFFSET_BIAS (1<<3) #define PIN_USER (1<<4) #define PIN_UPDATE (1<<5) -#define PIN_OFFSET_MASK (~4095) +#define PIN_ZONE_4G (1<<6) +#define PIN_HIGH (1<<7) +#define PIN_OFFSET_MASK -(PIN_HIGH<<1) int __must_check i915_gem_object_pin(struct drm_i915_gem_object *obj, struct i915_address_space *vm, diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c index eeea748..8aa0189 100644 --- a/drivers/gpu/drm/i915/i915_gem.c +++ b/drivers/gpu/drm/i915/i915_gem.c @@ -3718,6 +3718,8 @@ i915_gem_object_bind_to_vm(struct drm_i915_gem_object *obj, struct drm_i915_private *dev_priv = dev->dev_private; u32 fence_alignment, unfenced_alignment; u64 size, fence_size; + u32 search_flag = DRM_MM_SEARCH_DEFAULT; + u32 alloc_flag = DRM_MM_CREATE_DEFAULT; u64 start = flags & PIN_OFFSET_BIAS ? flags & PIN_OFFSET_MASK : 0; u64 end = @@ -3759,6 +3761,17 @@ i915_gem_object_bind_to_vm(struct drm_i915_gem_object *obj, obj->tiling_mode, false); size = flags & PIN_MAPPABLE ? fence_size : obj->base.size; + + if (flags & PIN_HIGH) { + search_flag = DRM_MM_SEARCH_BELOW; + alloc_flag = DRM_MM_CREATE_TOP; + } + + /* Wa32bitGeneralStateOffset & Wa32bitInstructionBaseOffset, + * limit address to the first 4GBs for flagged objects. + */ + if (flags & PIN_ZONE_4G) + end = (1ULL << 32); } if (alignment == 0) @@ -3801,8 +3814,8 @@ search_free: size, alignment, obj->cache_level, start, end, - DRM_MM_SEARCH_DEFAULT, - DRM_MM_CREATE_DEFAULT); + search_flag, + alloc_flag); if (ret) { ret = i915_gem_evict_something(dev, vm, size, alignment, obj->cache_level, diff --git a/drivers/gpu/drm/i915/i915_gem_execbuffer.c b/drivers/gpu/drm/i915/i915_gem_execbuffer.c index 600db74..f52b736 100644 --- a/drivers/gpu/drm/i915/i915_gem_execbuffer.c +++ b/drivers/gpu/drm/i915/i915_gem_execbuffer.c @@ -588,11 +588,17 @@ i915_gem_execbuffer_reserve_vma(struct i915_vma *vma, if (entry->flags & EXEC_OBJECT_NEEDS_GTT) flags |= PIN_GLOBAL; + flags |= PIN_ZONE_4G; + if (entry->flags & EXEC_OBJECT_SUPPORTS_48B_ADDRESS) + flags &= ~PIN_ZONE_4G; + if (!drm_mm_node_allocated(&vma->node)) { if (entry->flags & __EXEC_OBJECT_NEEDS_MAP) flags |= PIN_GLOBAL | PIN_MAPPABLE; if (entry->flags & __EXEC_OBJECT_NEEDS_BIAS) flags |= BATCH_OFFSET_BIAS | PIN_OFFSET_BIAS; + if ((flags & PIN_MAPPABLE) == 0) + flags |= PIN_HIGH; } ret = i915_gem_object_pin(obj, vma->vm, entry->alignment, flags); @@ -670,6 +676,10 @@ eb_vma_misplaced(struct i915_vma *vma) if (entry->flags & __EXEC_OBJECT_NEEDS_MAP && !obj->map_and_fenceable) return !only_mappable_for_reloc(entry->flags); + if (!(entry->flags & EXEC_OBJECT_SUPPORTS_48B_ADDRESS) && + (vma->node.start + vma->node.size) >= (1ULL << 32)) + return true; + return false; } diff --git a/include/uapi/drm/i915_drm.h b/include/uapi/drm/i915_drm.h index f88cc1c..b91cf45 100644 --- a/include/uapi/drm/i915_drm.h +++ b/include/uapi/drm/i915_drm.h @@ -685,7 +685,8 @@ struct drm_i915_gem_exec_object2 { #define EXEC_OBJECT_NEEDS_FENCE (1<<0) #define EXEC_OBJECT_NEEDS_GTT (1<<1) #define EXEC_OBJECT_WRITE (1<<2) -#define __EXEC_OBJECT_UNKNOWN_FLAGS -(EXEC_OBJECT_WRITE<<1) +#define EXEC_OBJECT_SUPPORTS_48B_ADDRESS (1<<3) +#define __EXEC_OBJECT_UNKNOWN_FLAGS -(EXEC_OBJECT_SUPPORTS_48B_ADDRESS<<1) __u64 flags; __u64 rsvd1;