From patchwork Thu Jan 17 20:45:17 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ben Widawsky X-Patchwork-Id: 1998261 Return-Path: X-Original-To: patchwork-intel-gfx@patchwork.kernel.org Delivered-To: patchwork-process-083081@patchwork2.kernel.org Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) by patchwork2.kernel.org (Postfix) with ESMTP id 019F9DF5B1 for ; Thu, 17 Jan 2013 20:48:34 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id DD12FE6D37 for ; Thu, 17 Jan 2013 12:48:33 -0800 (PST) X-Original-To: intel-gfx@lists.freedesktop.org Delivered-To: intel-gfx@lists.freedesktop.org Received: from shiva.chad-versace.us (209-20-75-48.static.cloud-ips.com [209.20.75.48]) by gabe.freedesktop.org (Postfix) with ESMTP id 903F0E624F for ; Thu, 17 Jan 2013 12:44:46 -0800 (PST) Received: by shiva.chad-versace.us (Postfix, from userid 1005) id 46E758811F; Thu, 17 Jan 2013 20:47:29 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.2 (2011-06-06) on shiva.chad-versace.us X-Spam-Level: X-Spam-Status: No, score=-2.9 required=5.0 tests=ALL_TRUSTED,BAYES_00 autolearn=ham version=3.3.2 Received: from lundgren.jf.intel.com (unknown [134.134.139.76]) by shiva.chad-versace.us (Postfix) with ESMTPSA id 71A1C8845A; Thu, 17 Jan 2013 20:46:48 +0000 (UTC) From: Ben Widawsky To: intel-gfx@lists.freedesktop.org Date: Thu, 17 Jan 2013 12:45:17 -0800 Message-Id: <1358455524-5331-7-git-send-email-ben@bwidawsk.net> X-Mailer: git-send-email 1.8.1.1 In-Reply-To: <1358455524-5331-1-git-send-email-ben@bwidawsk.net> References: <1358455524-5331-1-git-send-email-ben@bwidawsk.net> Cc: Ben Widawsky Subject: [Intel-gfx] [PATCH 06/13] drm/i915: Remove use of gtt_mappable_entries X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.13 Precedence: list List-Id: Intel graphics driver community testing & development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Sender: intel-gfx-bounces+patchwork-intel-gfx=patchwork.kernel.org@lists.freedesktop.org Errors-To: intel-gfx-bounces+patchwork-intel-gfx=patchwork.kernel.org@lists.freedesktop.org Mappable_end, ie. size is almost always what you want as opposed to the number of entries. Since we already have that information, we can scrap the number of entries and only calculate it when needed. If gtt_start is !0, this will have slightly different behavior. This difference can only occur in DRI1, and exists when we try to kick out the firmware fb. The new code seems like a bugfix to me. The other case where we've changed the behavior is during init we check the mappable region against our current known upper and lower limits (64MB, and 512MB). This now matches the comment, and makes things more convenient after removing gtt_mappable_entries. Also worth noting is the setting of mappable_end is taken out of setup because we do it earlier now in the DRI2 case and therefore need to add that tiny hunk to support the DRI1 IOCTL. v2: Move up mappable end to before legacy AGP init v3: Add the dev_priv inclusion here from previous rebase error in patch 5 Reviewed-by: Rodrigo Vivi (v2) Signed-off-by: Ben Widawsky --- drivers/gpu/drm/i915/i915_dma.c | 8 ++++---- drivers/gpu/drm/i915/i915_gem.c | 2 ++ drivers/gpu/drm/i915/i915_gem_gtt.c | 15 +++++++-------- drivers/gpu/drm/i915/intel_fb.c | 3 +-- 4 files changed, 14 insertions(+), 14 deletions(-) diff --git a/drivers/gpu/drm/i915/i915_dma.c b/drivers/gpu/drm/i915/i915_dma.c index 468d2a0..3f70178 100644 --- a/drivers/gpu/drm/i915/i915_dma.c +++ b/drivers/gpu/drm/i915/i915_dma.c @@ -1427,8 +1427,8 @@ static void i915_kick_out_firmware_fb(struct drm_i915_private *dev_priv) return; ap->ranges[0].base = dev_priv->gtt.mappable_base; - ap->ranges[0].size = - dev_priv->mm.gtt->gtt_mappable_entries << PAGE_SHIFT; + ap->ranges[0].size = dev_priv->gtt.mappable_end - dev_priv->gtt.start; + primary = pdev->resource[PCI_ROM_RESOURCE].flags & IORESOURCE_ROM_SHADOW; @@ -1542,7 +1542,7 @@ int i915_driver_load(struct drm_device *dev, unsigned long flags) goto put_gmch; } - aperture_size = dev_priv->mm.gtt->gtt_mappable_entries << PAGE_SHIFT; + aperture_size = dev_priv->gtt.mappable_end; dev_priv->gtt.mappable = io_mapping_create_wc(dev_priv->gtt.mappable_base, @@ -1699,7 +1699,7 @@ int i915_driver_unload(struct drm_device *dev) if (dev_priv->mm.gtt_mtrr >= 0) { mtrr_del(dev_priv->mm.gtt_mtrr, dev_priv->gtt.mappable_base, - dev_priv->mm.gtt->gtt_mappable_entries * PAGE_SIZE); + dev_priv->gtt.mappable_end); dev_priv->mm.gtt_mtrr = -1; } diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c index 8f74f3e..9265c0c 100644 --- a/drivers/gpu/drm/i915/i915_gem.c +++ b/drivers/gpu/drm/i915/i915_gem.c @@ -149,6 +149,7 @@ int i915_gem_init_ioctl(struct drm_device *dev, void *data, struct drm_file *file) { + struct drm_i915_private *dev_priv = dev->dev_private; struct drm_i915_gem_init *args = data; if (drm_core_check_feature(dev, DRIVER_MODESET)) @@ -165,6 +166,7 @@ i915_gem_init_ioctl(struct drm_device *dev, void *data, mutex_lock(&dev->struct_mutex); i915_gem_setup_global_gtt(dev, args->gtt_start, args->gtt_end, args->gtt_end); + dev_priv->gtt.mappable_end = args->gtt_end; mutex_unlock(&dev->struct_mutex); return 0; diff --git a/drivers/gpu/drm/i915/i915_gem_gtt.c b/drivers/gpu/drm/i915/i915_gem_gtt.c index 0b89305..0f0db02 100644 --- a/drivers/gpu/drm/i915/i915_gem_gtt.c +++ b/drivers/gpu/drm/i915/i915_gem_gtt.c @@ -557,7 +557,6 @@ void i915_gem_setup_global_gtt(struct drm_device *dev, } dev_priv->gtt.start = start; - dev_priv->gtt.mappable_end = mappable_end; dev_priv->gtt.total = end - start; /* Clear any non-preallocated blocks */ @@ -596,7 +595,7 @@ void i915_gem_init_global_gtt(struct drm_device *dev) int ret; gtt_size = dev_priv->mm.gtt->gtt_total_entries << PAGE_SHIFT; - mappable_size = dev_priv->mm.gtt->gtt_mappable_entries << PAGE_SHIFT; + mappable_size = dev_priv->gtt.mappable_end; if (intel_enable_ppgtt(dev) && HAS_ALIASING_PPGTT(dev)) { /* PPGTT pdes are stolen from global gtt ptes, so shrink the @@ -692,6 +691,7 @@ int i915_gem_gtt_init(struct drm_device *dev) int ret; dev_priv->gtt.mappable_base = pci_resource_start(dev->pdev, 2); + dev_priv->gtt.mappable_end = pci_resource_len(dev->pdev, 2); /* On modern platforms we need not worry ourself with the legacy * hostbridge query stuff. Skip it entirely @@ -735,14 +735,13 @@ int i915_gem_gtt_init(struct drm_device *dev) else dev_priv->mm.gtt->stolen_size = gen7_get_stolen_size(snb_gmch_ctl); - dev_priv->mm.gtt->gtt_mappable_entries = pci_resource_len(dev->pdev, 2) >> PAGE_SHIFT; /* 64/512MB is the current min/max we actually know of, but this is just a * coarse sanity check. */ - if ((dev_priv->mm.gtt->gtt_mappable_entries >> 8) < 64 || - dev_priv->mm.gtt->gtt_mappable_entries > dev_priv->mm.gtt->gtt_total_entries) { - DRM_ERROR("Unknown GMADR entries (%d)\n", - dev_priv->mm.gtt->gtt_mappable_entries); + if ((dev_priv->gtt.mappable_end < (64<<20) || + (dev_priv->gtt.mappable_end > (512<<20)))) { + DRM_ERROR("Unknown GMADR size (%lx)\n", + dev_priv->gtt.mappable_end); ret = -ENXIO; goto err_out; } @@ -764,7 +763,7 @@ int i915_gem_gtt_init(struct drm_device *dev) /* GMADR is the PCI aperture used by SW to access tiled GFX surfaces in a linear fashion. */ DRM_INFO("Memory usable by graphics device = %dM\n", dev_priv->mm.gtt->gtt_total_entries >> 8); - DRM_DEBUG_DRIVER("GMADR size = %dM\n", dev_priv->mm.gtt->gtt_mappable_entries >> 8); + DRM_DEBUG_DRIVER("GMADR size = %ldM\n", dev_priv->gtt.mappable_end >> 20); DRM_DEBUG_DRIVER("GTT stolen size = %dM\n", dev_priv->mm.gtt->stolen_size >> 20); return 0; diff --git a/drivers/gpu/drm/i915/intel_fb.c b/drivers/gpu/drm/i915/intel_fb.c index ce02af8..ce5f544 100644 --- a/drivers/gpu/drm/i915/intel_fb.c +++ b/drivers/gpu/drm/i915/intel_fb.c @@ -135,8 +135,7 @@ static int intelfb_create(struct intel_fbdev *ifbdev, goto out_unpin; } info->apertures->ranges[0].base = dev->mode_config.fb_base; - info->apertures->ranges[0].size = - dev_priv->mm.gtt->gtt_mappable_entries << PAGE_SHIFT; + info->apertures->ranges[0].size = dev_priv->gtt.mappable_end; info->fix.smem_start = dev->mode_config.fb_base + obj->gtt_offset; info->fix.smem_len = size;