From patchwork Thu Dec 9 15:45:33 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ramalingam C X-Patchwork-Id: 12667387 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org 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 smtp.lore.kernel.org (Postfix) with ESMTPS id 28E23C433EF for ; Thu, 9 Dec 2021 17:00:07 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 629F110E1ED; Thu, 9 Dec 2021 16:54:11 +0000 (UTC) Received: from mga06.intel.com (mga06.intel.com [134.134.136.31]) by gabe.freedesktop.org (Postfix) with ESMTPS id 0B0A5891DD; Thu, 9 Dec 2021 15:46:57 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1639064818; x=1670600818; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=L2Hbm0AXNsu1t3eNcZY304Dflr8gpsGAkaCW3gW7Nec=; b=hjkhN77JbzHVRv8r99ifHlyJAxcW9SyBp5AVQif5fy9OUmVDKKqf+ZLW dT3OqnX9diUqH3ftZ/5AwsQ68BTZgIzxgJsRGeG+OkdT+RUpFXMqLUgOu iVYnGr0RSI8G0fFHg+kVAoPRIib5VQTrvtXpHDROBRl7kmAeCVcN2jQXP y6D07oiowg8/TMJ6RGTFvdPbaRHkh1UWT+auZyReSyncYNYcUc1C2H1bc tSmFiECgvnNHIOES6bE6Zj0zDq7HlfpqK9nNZCBMB1Mhd4pBCzifVcZ3P U61wEPcSJDt2QqvPjIwqwzJOl9oSRYYROqHVOvcJUX40W9rcQS+7XxW1j g==; X-IronPort-AV: E=McAfee;i="6200,9189,10192"; a="298917239" X-IronPort-AV: E=Sophos;i="5.88,192,1635231600"; d="scan'208";a="298917239" Received: from orsmga007.jf.intel.com ([10.7.209.58]) by orsmga104.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 09 Dec 2021 07:46:39 -0800 X-IronPort-AV: E=Sophos;i="5.88,192,1635231600"; d="scan'208";a="503535285" Received: from ramaling-i9x.iind.intel.com ([10.99.66.205]) by orsmga007-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 09 Dec 2021 07:46:35 -0800 From: Ramalingam C To: dri-devel , intel-gfx Date: Thu, 9 Dec 2021 21:15:33 +0530 Message-Id: <20211209154533.4084-17-ramalingam.c@intel.com> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20211209154533.4084-1-ramalingam.c@intel.com> References: <20211209154533.4084-1-ramalingam.c@intel.com> MIME-Version: 1.0 Subject: [Intel-gfx] [PATCH v4 16/16] Doc/gpu/rfc/i915: i915 DG2 uAPI 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: Kenneth Graunke , Slawomir Milczarek , Daniel Vetter , Pekka Paalanen , Hellstrom Thomas , Matthew Auld , Simon Ser , mesa-dev@lists.freedesktop.org Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" Details of the new features getting added as part of DG2 enabling and their implicit impact on the uAPI. v2: improvised the Flat-CCS documentation [Danvet & CQ] Signed-off-by: Ramalingam C cc: Daniel Vetter cc: Matthew Auld cc: Simon Ser cc: Pekka Paalanen Cc: Jordan Justen Cc: Kenneth Graunke Cc: mesa-dev@lists.freedesktop.org Cc: Tony Ye Cc: Slawomir Milczarek --- Documentation/gpu/rfc/i915_dg2.rst | 32 ++++++++++++++++++++++++++++++ Documentation/gpu/rfc/index.rst | 3 +++ 2 files changed, 35 insertions(+) create mode 100644 Documentation/gpu/rfc/i915_dg2.rst diff --git a/Documentation/gpu/rfc/i915_dg2.rst b/Documentation/gpu/rfc/i915_dg2.rst new file mode 100644 index 000000000000..9d28b1812bc7 --- /dev/null +++ b/Documentation/gpu/rfc/i915_dg2.rst @@ -0,0 +1,32 @@ +==================== +I915 DG2 RFC Section +==================== + +Upstream plan +============= +Plan to upstream the DG2 enabling is: + +* Merge basic HW enabling for DG2 (Still without pciid) +* Merge the 64k support for lmem +* Merge the flat CCS enabling patches +* Add the pciid for DG2 and enable the DG2 in CI + + +64K page support for lmem +========================= +On DG2 hw, local-memory supports minimum GTT page size of 64k only. 4k is not +supported anymore. + +DG2 hw doesn't support the 64k (lmem) and 4k (smem) pages in the same ppgtt +Page table. Refer the struct drm_i915_gem_create_ext for the implication of +handling the 64k page size. + +.. kernel-doc:: include/uapi/drm/i915_drm.h + :functions: drm_i915_gem_create_ext + + +Flat CCS support for lmem +========================= + +.. kernel-doc:: drivers/gpu/drm/i915/gt/intel_migrate.c + :doc: Flat-CCS - Memory compression for Local memory diff --git a/Documentation/gpu/rfc/index.rst b/Documentation/gpu/rfc/index.rst index 91e93a705230..afb320ed4028 100644 --- a/Documentation/gpu/rfc/index.rst +++ b/Documentation/gpu/rfc/index.rst @@ -20,6 +20,9 @@ host such documentation: i915_gem_lmem.rst +.. toctree:: + i915_dg2.rst + .. toctree:: i915_scheduler.rst