From patchwork Tue Mar 18 05:48:42 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ben Widawsky X-Patchwork-Id: 3847381 Return-Path: X-Original-To: patchwork-intel-gfx@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.19.201]) by patchwork1.web.kernel.org (Postfix) with ESMTP id 4ABEF9F525 for ; Tue, 18 Mar 2014 05:49:19 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 68F292037D for ; Tue, 18 Mar 2014 05:49:18 +0000 (UTC) Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) by mail.kernel.org (Postfix) with ESMTP id 4BB2020260 for ; Tue, 18 Mar 2014 05:49:15 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 0F3692B0EE; Mon, 17 Mar 2014 22:49:14 -0700 (PDT) X-Original-To: intel-gfx@lists.freedesktop.org Delivered-To: intel-gfx@lists.freedesktop.org Received: from mga02.intel.com (mga02.intel.com [134.134.136.20]) by gabe.freedesktop.org (Postfix) with ESMTP id D907D2B0DA for ; Mon, 17 Mar 2014 22:49:07 -0700 (PDT) Received: from orsmga001.jf.intel.com ([10.7.209.18]) by orsmga101.jf.intel.com with ESMTP; 17 Mar 2014 22:49:07 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="4.97,675,1389772800"; d="scan'208";a="474655750" Received: from unknown (HELO ironside.amr.corp.intel.com) ([10.255.13.186]) by orsmga001.jf.intel.com with ESMTP; 17 Mar 2014 22:49:07 -0700 From: Ben Widawsky To: Intel GFX Date: Mon, 17 Mar 2014 22:48:42 -0700 Message-Id: <1395121738-29126-11-git-send-email-benjamin.widawsky@intel.com> X-Mailer: git-send-email 1.9.0 In-Reply-To: <1395121738-29126-1-git-send-email-benjamin.widawsky@intel.com> References: <1395121738-29126-1-git-send-email-benjamin.widawsky@intel.com> Subject: [Intel-gfx] [PATCH 10/26] drm/i915: Make gen6_write_pdes gen6_map_page_tables X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.15 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=-4.2 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_MED, T_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 Split out single mappings which will help with upcoming work. Also while here, rename the function because it is a better description - but this function is going away soon. Signed-off-by: Ben Widawsky --- drivers/gpu/drm/i915/i915_gem_gtt.c | 39 ++++++++++++++++++++++--------------- 1 file changed, 23 insertions(+), 16 deletions(-) diff --git a/drivers/gpu/drm/i915/i915_gem_gtt.c b/drivers/gpu/drm/i915/i915_gem_gtt.c index a239196..d89054d 100644 --- a/drivers/gpu/drm/i915/i915_gem_gtt.c +++ b/drivers/gpu/drm/i915/i915_gem_gtt.c @@ -655,26 +655,33 @@ static void gen6_dump_ppgtt(struct i915_hw_ppgtt *ppgtt, struct seq_file *m) } } -static void gen6_write_pdes(struct i915_hw_ppgtt *ppgtt) +static void gen6_map_single(struct i915_hw_ppgtt *ppgtt, + const unsigned pde_index, + dma_addr_t daddr) { struct drm_i915_private *dev_priv = ppgtt->base.dev->dev_private; - gen6_gtt_pte_t __iomem *pd_addr; uint32_t pd_entry; + gen6_gtt_pte_t __iomem *pd_addr = + (gen6_gtt_pte_t __iomem*)dev_priv->gtt.gsm + ppgtt->pd_offset / sizeof(gen6_gtt_pte_t); + + pd_entry = GEN6_PDE_ADDR_ENCODE(daddr); + pd_entry |= GEN6_PDE_VALID; + + writel(pd_entry, pd_addr + pde_index); +} + +/* Map all the page tables found in the ppgtt structure to incrementing page + * directories. */ +static void gen6_map_page_tables(struct i915_hw_ppgtt *ppgtt) +{ + struct drm_i915_private *dev_priv = ppgtt->base.dev->dev_private; int i; WARN_ON(ppgtt->pd_offset & 0x3f); - pd_addr = (gen6_gtt_pte_t __iomem*)dev_priv->gtt.gsm + - ppgtt->pd_offset / sizeof(gen6_gtt_pte_t); - for (i = 0; i < ppgtt->num_pd_entries; i++) { - dma_addr_t pt_addr; - - pt_addr = ppgtt->pt_dma_addr[i]; - pd_entry = GEN6_PDE_ADDR_ENCODE(pt_addr); - pd_entry |= GEN6_PDE_VALID; + for (i = 0; i < ppgtt->num_pd_entries; i++) + gen6_map_single(ppgtt, i, ppgtt->pt_dma_addr[i]); - writel(pd_entry, pd_addr + i); - } - readl(pd_addr); + readl(dev_priv->gtt.gsm); } static uint32_t get_pd_offset(struct i915_hw_ppgtt *ppgtt) @@ -1145,7 +1152,7 @@ static int gen6_ppgtt_init(struct i915_hw_ppgtt *ppgtt) ppgtt->pd_offset = ppgtt->node.start / PAGE_SIZE * sizeof(gen6_gtt_pte_t); - gen6_write_pdes(ppgtt); + gen6_map_page_tables(ppgtt); ppgtt->base.clear_range(&ppgtt->base, 0, ppgtt->base.total, true); @@ -1319,11 +1326,11 @@ void i915_gem_restore_gtt_mappings(struct drm_device *dev) /* TODO: Perhaps it shouldn't be gen6 specific */ if (i915_is_ggtt(vm)) { if (dev_priv->mm.aliasing_ppgtt) - gen6_write_pdes(dev_priv->mm.aliasing_ppgtt); + gen6_map_page_tables(dev_priv->mm.aliasing_ppgtt); continue; } - gen6_write_pdes(container_of(vm, struct i915_hw_ppgtt, base)); + gen6_map_page_tables(container_of(vm, struct i915_hw_ppgtt, base)); } i915_gem_chipset_flush(dev);