From patchwork Thu Jun 27 20:56:13 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Matthew Auld X-Patchwork-Id: 11020603 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 552EC14C0 for ; Thu, 27 Jun 2019 20:57:30 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 4D21128703 for ; Thu, 27 Jun 2019 20:57:30 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 41B852870F; Thu, 27 Jun 2019 20:57:30 +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 ED68F28703 for ; Thu, 27 Jun 2019 20:57:29 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id A5FDB6E863; Thu, 27 Jun 2019 20:57:21 +0000 (UTC) X-Original-To: intel-gfx@lists.freedesktop.org Delivered-To: intel-gfx@lists.freedesktop.org Received: from mga06.intel.com (mga06.intel.com [134.134.136.31]) by gabe.freedesktop.org (Postfix) with ESMTPS id 23E206E84F for ; Thu, 27 Jun 2019 20:56:56 +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 orsmga104.jf.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 27 Jun 2019 13:56:55 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.63,425,1557212400"; d="scan'208";a="164455669" Received: from unknown (HELO mwahaha-bdw.ger.corp.intel.com) ([10.252.4.227]) by fmsmga007.fm.intel.com with ESMTP; 27 Jun 2019 13:56:55 -0700 From: Matthew Auld To: intel-gfx@lists.freedesktop.org Date: Thu, 27 Jun 2019 21:56:13 +0100 Message-Id: <20190627205633.1143-18-matthew.auld@intel.com> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20190627205633.1143-1-matthew.auld@intel.com> References: <20190627205633.1143-1-matthew.auld@intel.com> MIME-Version: 1.0 Subject: [Intel-gfx] [PATCH v2 17/37] drm/i915/lmem: support pwrite 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: , Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" X-Virus-Scanned: ClamAV using ClamSMTP We need to add support for pwrite'ing an LMEM object. Signed-off-by: Matthew Auld Cc: Joonas Lahtinen Cc: Abdiel Janulgue --- drivers/gpu/drm/i915/intel_region_lmem.c | 75 ++++++++++++++++++++++++ 1 file changed, 75 insertions(+) diff --git a/drivers/gpu/drm/i915/intel_region_lmem.c b/drivers/gpu/drm/i915/intel_region_lmem.c index 54b2c7bf177d..d0a5311cf235 100644 --- a/drivers/gpu/drm/i915/intel_region_lmem.c +++ b/drivers/gpu/drm/i915/intel_region_lmem.c @@ -81,12 +81,87 @@ static int lmem_pread(struct drm_i915_gem_object *obj, return ret; } +static int lmem_pwrite(struct drm_i915_gem_object *obj, + const struct drm_i915_gem_pwrite *arg) +{ + struct drm_i915_private *i915 = to_i915(obj->base.dev); + struct intel_runtime_pm *rpm = &i915->runtime_pm; + intel_wakeref_t wakeref; + struct dma_fence *fence; + char __user *user_data; + unsigned int offset; + unsigned long idx; + u64 remain; + int ret; + + ret = i915_gem_object_pin_pages(obj); + if (ret) + return ret; + + i915_gem_object_lock(obj); + ret = i915_gem_object_set_to_wc_domain(obj, true); + if (ret) { + i915_gem_object_unlock(obj); + goto out_unpin; + } + + fence = i915_gem_object_lock_fence(obj); + i915_gem_object_unlock(obj); + if (!fence) { + ret = -ENOMEM; + goto out_unpin; + } + + wakeref = intel_runtime_pm_get(rpm); + + remain = arg->size; + user_data = u64_to_user_ptr(arg->data_ptr); + offset = offset_in_page(arg->offset); + for (idx = arg->offset >> PAGE_SHIFT; remain; idx++) { + unsigned long unwritten; + void __iomem *vaddr; + int length; + + length = remain; + if (offset + length > PAGE_SIZE) + length = PAGE_SIZE - offset; + + vaddr = i915_gem_object_lmem_io_map_page(obj, idx); + if (!vaddr) { + ret = -ENOMEM; + goto out_put; + } + + unwritten = copy_from_user((void __force*)vaddr + offset, + user_data, + length); + io_mapping_unmap_atomic(vaddr); + if (unwritten) { + ret = -EFAULT; + goto out_put; + } + + remain -= length; + user_data += length; + offset = 0; + } + +out_put: + intel_runtime_pm_put(rpm, wakeref); + i915_gem_object_unlock_fence(obj, fence); +out_unpin: + i915_gem_object_unpin_pages(obj); + + return ret; +} + static const struct drm_i915_gem_object_ops region_lmem_obj_ops = { .get_pages = i915_memory_region_get_pages_buddy, .put_pages = i915_memory_region_put_pages_buddy, .release = i915_gem_object_release_memory_region, .pread = lmem_pread, + .pwrite = lmem_pwrite, }; static struct drm_i915_gem_object *