From patchwork Fri Aug 9 22:26:37 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Matthew Auld X-Patchwork-Id: 11087849 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 87BBF912 for ; Fri, 9 Aug 2019 22:28:16 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 7115821FAC for ; Fri, 9 Aug 2019 22:28:16 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 622082228E; Fri, 9 Aug 2019 22:28:16 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-5.2 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_MED autolearn=ham version=3.3.1 Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 1886C21FAC for ; Fri, 9 Aug 2019 22:28:16 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 929B16EF0A; Fri, 9 Aug 2019 22:27:31 +0000 (UTC) X-Original-To: dri-devel@lists.freedesktop.org Delivered-To: dri-devel@lists.freedesktop.org Received: from mga11.intel.com (mga11.intel.com [192.55.52.93]) by gabe.freedesktop.org (Postfix) with ESMTPS id 39DD76EF1D; Fri, 9 Aug 2019 22:27:29 +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 fmsmga102.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 09 Aug 2019 15:27:29 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.64,366,1559545200"; d="scan'208";a="176927107" Received: from jmath3-mobl1.ger.corp.intel.com (HELO mwahaha-bdw.ger.corp.intel.com) ([10.252.5.86]) by fmsmga007.fm.intel.com with ESMTP; 09 Aug 2019 15:27:28 -0700 From: Matthew Auld To: intel-gfx@lists.freedesktop.org Subject: [PATCH v3 31/37] drm/i915/lmem: add helper to get CPU accessible offset Date: Fri, 9 Aug 2019 23:26:37 +0100 Message-Id: <20190809222643.23142-32-matthew.auld@intel.com> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20190809222643.23142-1-matthew.auld@intel.com> References: <20190809222643.23142-1-matthew.auld@intel.com> MIME-Version: 1.0 X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Abdiel Janulgue , dri-devel@lists.freedesktop.org Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" X-Virus-Scanned: ClamAV using ClamSMTP From: Abdiel Janulgue LMEM can be accessed by the CPU through a BAR. The mapping itself should be 1:1. Signed-off-by: Abdiel Janulgue Signed-off-by: Matthew Auld Cc: Joonas Lahtinen --- drivers/gpu/drm/i915/gem/i915_gem_lmem.c | 16 ++++++++++++++++ drivers/gpu/drm/i915/gem/i915_gem_lmem.h | 3 +++ 2 files changed, 19 insertions(+) diff --git a/drivers/gpu/drm/i915/gem/i915_gem_lmem.c b/drivers/gpu/drm/i915/gem/i915_gem_lmem.c index f00078ac331e..8d0251af5dfc 100644 --- a/drivers/gpu/drm/i915/gem/i915_gem_lmem.c +++ b/drivers/gpu/drm/i915/gem/i915_gem_lmem.c @@ -225,6 +225,22 @@ void __iomem *i915_gem_object_lmem_io_map(struct drm_i915_gem_object *obj, return io_mapping_map_wc(&obj->mm.region->iomap, offset, size); } +resource_size_t i915_gem_object_lmem_io_offset(struct drm_i915_gem_object *obj, + unsigned long n) +{ + struct intel_memory_region *mem = obj->mm.region; + dma_addr_t daddr; + + /* + * XXX: It's not a dma address, more a device address or physical + * offset, so we are clearly abusing the semantics of the sg_table + * here, and elsewhere like in the gtt paths. + */ + daddr = i915_gem_object_get_dma_address(obj, n); + + return mem->io_start + daddr; +} + bool i915_gem_object_is_lmem(struct drm_i915_gem_object *obj) { struct intel_memory_region *region = obj->mm.region; diff --git a/drivers/gpu/drm/i915/gem/i915_gem_lmem.h b/drivers/gpu/drm/i915/gem/i915_gem_lmem.h index 31a6462bdbb6..43e6e715eeed 100644 --- a/drivers/gpu/drm/i915/gem/i915_gem_lmem.h +++ b/drivers/gpu/drm/i915/gem/i915_gem_lmem.h @@ -21,6 +21,9 @@ void __iomem * i915_gem_object_lmem_io_map_page_atomic(struct drm_i915_gem_object *obj, unsigned long n); +resource_size_t i915_gem_object_lmem_io_offset(struct drm_i915_gem_object *obj, + unsigned long n); + bool i915_gem_object_is_lmem(struct drm_i915_gem_object *obj); struct drm_i915_gem_object *