From patchwork Fri Apr 17 18:51:34 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Michael J. Ruhl" X-Patchwork-Id: 11495975 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 24CCC912 for ; Fri, 17 Apr 2020 18:51:51 +0000 (UTC) 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 mail.kernel.org (Postfix) with ESMTPS id 0DDED20936 for ; Fri, 17 Apr 2020 18:51:51 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 0DDED20936 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=intel.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=intel-gfx-bounces@lists.freedesktop.org Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id F3F156E134; Fri, 17 Apr 2020 18:51:49 +0000 (UTC) X-Original-To: intel-gfx@lists.freedesktop.org Delivered-To: intel-gfx@lists.freedesktop.org Received: from mga03.intel.com (mga03.intel.com [134.134.136.65]) by gabe.freedesktop.org (Postfix) with ESMTPS id 1C13B6E12E for ; Fri, 17 Apr 2020 18:51:46 +0000 (UTC) IronPort-SDR: i05d6CfHpc7VtdtbgISin9xitAvl/3Vo49vudw64AFJb3n3UcsIAzxkymXpqqfNVGdAZTDhQgP 533klhs5trnQ== X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga005.jf.intel.com ([10.7.209.41]) by orsmga103.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 17 Apr 2020 11:51:45 -0700 IronPort-SDR: OEqKixk57nP2QhP+5JkvZuSBiJ1LyNIo1wbfXp8/aanqHxjfC0gPB7IQYScrQmabf44ygDLWBG RQAi3HYBr7sQ== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.72,395,1580803200"; d="scan'208";a="428322348" Received: from awvttdev-05.aw.intel.com ([10.228.212.156]) by orsmga005.jf.intel.com with ESMTP; 17 Apr 2020 11:51:44 -0700 From: "Michael J. Ruhl" To: intel-gfx@lists.freedesktop.org Date: Fri, 17 Apr 2020 14:51:34 -0400 Message-Id: <20200417185134.47401-1-michael.j.ruhl@intel.com> X-Mailer: git-send-email 2.21.0 MIME-Version: 1.0 Subject: [Intel-gfx] [PATCH v1] drm/i915: Refactor setting dma info to a common helper 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: chris@chris-wilson.co.uk Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" DMA_MASK bit values are different for different generations. This will become more difficult to manage over time with the open coded usage of different versions of the device. Fix by: disallow setting of dma mask in AGP path (< GEN(5) for i915, add dma_mask_size to the device info configuration, updating open code call sequence to the latest interface, refactoring into a common function for setting the dma segment and mask info Signed-off-by: Michael J. Ruhl cc: Brian Welty cc: Daniele Ceraolo Spurio Reviewed-by: Chris Wilson --- v1: removed i915 depenancy from agp path for dma mask Consolidated segment size and work arounds to the helper --- drivers/char/agp/intel-gtt.c | 17 +++-- drivers/gpu/drm/i915/gt/intel_ggtt.c | 15 ---- drivers/gpu/drm/i915/i915_drv.c | 94 +++++++++++++++--------- drivers/gpu/drm/i915/i915_pci.c | 14 ++++ drivers/gpu/drm/i915/intel_device_info.c | 1 + drivers/gpu/drm/i915/intel_device_info.h | 2 + 6 files changed, 87 insertions(+), 56 deletions(-) diff --git a/drivers/char/agp/intel-gtt.c b/drivers/char/agp/intel-gtt.c index 3d42fc4290bc..4b34a5195c65 100644 --- a/drivers/char/agp/intel-gtt.c +++ b/drivers/char/agp/intel-gtt.c @@ -1407,13 +1407,16 @@ int intel_gmch_probe(struct pci_dev *bridge_pdev, struct pci_dev *gpu_pdev, dev_info(&bridge_pdev->dev, "Intel %s Chipset\n", intel_gtt_chipsets[i].name); - mask = intel_private.driver->dma_mask_size; - if (pci_set_dma_mask(intel_private.pcidev, DMA_BIT_MASK(mask))) - dev_err(&intel_private.pcidev->dev, - "set gfx device dma mask %d-bit failed!\n", mask); - else - pci_set_consistent_dma_mask(intel_private.pcidev, - DMA_BIT_MASK(mask)); + if (bridge) { + mask = intel_private.driver->dma_mask_size; + if (pci_set_dma_mask(intel_private.pcidev, DMA_BIT_MASK(mask))) + dev_err(&intel_private.pcidev->dev, + "set gfx device dma mask %d-bit failed!\n", + mask); + else + pci_set_consistent_dma_mask(intel_private.pcidev, + DMA_BIT_MASK(mask)); + } if (intel_gtt_init() != 0) { intel_gmch_remove(); diff --git a/drivers/gpu/drm/i915/gt/intel_ggtt.c b/drivers/gpu/drm/i915/gt/intel_ggtt.c index eebd1190506f..66165b10256e 100644 --- a/drivers/gpu/drm/i915/gt/intel_ggtt.c +++ b/drivers/gpu/drm/i915/gt/intel_ggtt.c @@ -840,7 +840,6 @@ static int gen8_gmch_probe(struct i915_ggtt *ggtt) struct pci_dev *pdev = i915->drm.pdev; unsigned int size; u16 snb_gmch_ctl; - int err; /* TODO: We're not aware of mappable constraints on gen8 yet */ if (!IS_DGFX(i915)) { @@ -848,13 +847,6 @@ static int gen8_gmch_probe(struct i915_ggtt *ggtt) ggtt->mappable_end = resource_size(&ggtt->gmadr); } - err = pci_set_dma_mask(pdev, DMA_BIT_MASK(39)); - if (!err) - err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(39)); - if (err) - drm_err(&i915->drm, - "Can't set DMA mask/consistent mask (%d)\n", err); - pci_read_config_word(pdev, SNB_GMCH_CTRL, &snb_gmch_ctl); if (IS_CHERRYVIEW(i915)) size = chv_get_total_gtt_size(snb_gmch_ctl); @@ -990,7 +982,6 @@ static int gen6_gmch_probe(struct i915_ggtt *ggtt) struct pci_dev *pdev = i915->drm.pdev; unsigned int size; u16 snb_gmch_ctl; - int err; ggtt->gmadr = pci_resource(pdev, 2); ggtt->mappable_end = resource_size(&ggtt->gmadr); @@ -1005,12 +996,6 @@ static int gen6_gmch_probe(struct i915_ggtt *ggtt) return -ENXIO; } - err = pci_set_dma_mask(pdev, DMA_BIT_MASK(40)); - if (!err) - err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(40)); - if (err) - drm_err(&i915->drm, - "Can't set DMA mask/consistent mask (%d)\n", err); pci_read_config_word(pdev, SNB_GMCH_CTRL, &snb_gmch_ctl); size = gen6_get_total_gtt_size(snb_gmch_ctl); diff --git a/drivers/gpu/drm/i915/i915_drv.c b/drivers/gpu/drm/i915/i915_drv.c index 641f5e03b661..21e30b30d9d6 100644 --- a/drivers/gpu/drm/i915/i915_drv.c +++ b/drivers/gpu/drm/i915/i915_drv.c @@ -566,6 +566,62 @@ static void intel_sanitize_options(struct drm_i915_private *dev_priv) intel_gvt_sanitize_options(dev_priv); } +/** + * i915_set_dma_info - set all relevant PCI dma info as configured for the + * platform + * @i915: valid i915 instance + * + * Set the dma max segment size, device and coherent masks. The dma mask set + * needs to occur before i915_ggtt_probe_hw. + * + * A couple of platforms have special needs. Address them as well. + * + */ +static int i915_set_dma_info(struct drm_i915_private *i915) +{ + struct pci_dev *pdev = i915->drm.pdev; + unsigned int mask_size = INTEL_INFO(i915)->dma_mask_size; + int ret; + + GEM_BUG_ON(!mask_size); + + /* + * We don't have a max segment size, so set it to the max so sg's + * debugging layer doesn't complain + */ + dma_set_max_seg_size(&pdev->dev, UINT_MAX); + + ret = dma_set_mask(&pdev->dev, DMA_BIT_MASK(mask_size)); + if (ret) + goto mask_err; + + /* overlay on gen2 is broken and can't address above 1G */ + if (IS_GEN(i915, 2)) + mask_size = 30; + + /* + * 965GM sometimes incorrectly writes to hardware status page (HWS) + * using 32bit addressing, overwriting memory if HWS is located + * above 4GB. + * + * The documentation also mentions an issue with undefined + * behaviour if any general state is accessed within a page above 4GB, + * which also needs to be handled carefully. + */ + if (IS_I965G(i915) || IS_I965GM(i915)) + mask_size = 32; + + ret = dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(mask_size)); + if (ret) + goto mask_err; + + return 0; + +mask_err: + drm_err(&i915->drm, "Can't set DMA mask/consistent mask (%d)\n", ret); + return ret; +} + /** * i915_driver_hw_probe - setup state requiring device access * @dev_priv: device private @@ -611,6 +667,10 @@ static int i915_driver_hw_probe(struct drm_i915_private *dev_priv) /* needs to be done before ggtt probe */ intel_dram_edram_detect(dev_priv); + ret = i915_set_dma_info(dev_priv); + if (ret) + return ret; + i915_perf_init(dev_priv); ret = i915_ggtt_probe_hw(dev_priv); @@ -639,40 +699,6 @@ static int i915_driver_hw_probe(struct drm_i915_private *dev_priv) pci_set_master(pdev); - /* - * We don't have a max segment size, so set it to the max so sg's - * debugging layer doesn't complain - */ - dma_set_max_seg_size(&pdev->dev, UINT_MAX); - - /* overlay on gen2 is broken and can't address above 1G */ - if (IS_GEN(dev_priv, 2)) { - ret = dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(30)); - if (ret) { - drm_err(&dev_priv->drm, "failed to set DMA mask\n"); - - goto err_mem_regions; - } - } - - /* 965GM sometimes incorrectly writes to hardware status page (HWS) - * using 32bit addressing, overwriting memory if HWS is located - * above 4GB. - * - * The documentation also mentions an issue with undefined - * behaviour if any general state is accessed within a page above 4GB, - * which also needs to be handled carefully. - */ - if (IS_I965G(dev_priv) || IS_I965GM(dev_priv)) { - ret = dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(32)); - - if (ret) { - drm_err(&dev_priv->drm, "failed to set DMA mask\n"); - - goto err_mem_regions; - } - } - cpu_latency_qos_add_request(&dev_priv->pm_qos, PM_QOS_DEFAULT_VALUE); intel_gt_init_workarounds(dev_priv); diff --git a/drivers/gpu/drm/i915/i915_pci.c b/drivers/gpu/drm/i915/i915_pci.c index 66738f2c4f28..2fc25ec12c3d 100644 --- a/drivers/gpu/drm/i915/i915_pci.c +++ b/drivers/gpu/drm/i915/i915_pci.c @@ -171,6 +171,7 @@ .engine_mask = BIT(RCS0), \ .has_snoop = true, \ .has_coherent_ggtt = false, \ + .dma_mask_size = 32, \ I9XX_PIPE_OFFSETS, \ I9XX_CURSOR_OFFSETS, \ I9XX_COLORS, \ @@ -190,6 +191,7 @@ .engine_mask = BIT(RCS0), \ .has_snoop = true, \ .has_coherent_ggtt = false, \ + .dma_mask_size = 32, \ I845_PIPE_OFFSETS, \ I845_CURSOR_OFFSETS, \ I9XX_COLORS, \ @@ -226,6 +228,7 @@ static const struct intel_device_info i865g_info = { .engine_mask = BIT(RCS0), \ .has_snoop = true, \ .has_coherent_ggtt = true, \ + .dma_mask_size = 32, \ I9XX_PIPE_OFFSETS, \ I9XX_CURSOR_OFFSETS, \ I9XX_COLORS, \ @@ -286,6 +289,7 @@ static const struct intel_device_info g33_info = { PLATFORM(INTEL_G33), .display.has_hotplug = 1, .display.has_overlay = 1, + .dma_mask_size = 36, }; static const struct intel_device_info pnv_g_info = { @@ -293,6 +297,7 @@ static const struct intel_device_info pnv_g_info = { PLATFORM(INTEL_PINEVIEW), .display.has_hotplug = 1, .display.has_overlay = 1, + .dma_mask_size = 36, }; static const struct intel_device_info pnv_m_info = { @@ -301,6 +306,7 @@ static const struct intel_device_info pnv_m_info = { .is_mobile = 1, .display.has_hotplug = 1, .display.has_overlay = 1, + .dma_mask_size = 36, }; #define GEN4_FEATURES \ @@ -313,6 +319,7 @@ static const struct intel_device_info pnv_m_info = { .engine_mask = BIT(RCS0), \ .has_snoop = true, \ .has_coherent_ggtt = true, \ + .dma_mask_size = 36, \ I9XX_PIPE_OFFSETS, \ I9XX_CURSOR_OFFSETS, \ I965_COLORS, \ @@ -365,6 +372,7 @@ static const struct intel_device_info gm45_info = { .has_coherent_ggtt = true, \ /* ilk does support rc6, but we do not implement [power] contexts */ \ .has_rc6 = 0, \ + .dma_mask_size = 36, \ I9XX_PIPE_OFFSETS, \ I9XX_CURSOR_OFFSETS, \ ILK_COLORS, \ @@ -395,6 +403,7 @@ static const struct intel_device_info ilk_m_info = { .has_rc6 = 1, \ .has_rc6p = 1, \ .has_rps = true, \ + .dma_mask_size = 40, \ .ppgtt_type = INTEL_PPGTT_ALIASING, \ .ppgtt_size = 31, \ I9XX_PIPE_OFFSETS, \ @@ -445,6 +454,7 @@ static const struct intel_device_info snb_m_gt2_info = { .has_rc6 = 1, \ .has_rc6p = 1, \ .has_rps = true, \ + .dma_mask_size = 40, \ .ppgtt_type = INTEL_PPGTT_ALIASING, \ .ppgtt_size = 31, \ IVB_PIPE_OFFSETS, \ @@ -504,6 +514,7 @@ static const struct intel_device_info vlv_info = { .has_rps = true, .display.has_gmch = 1, .display.has_hotplug = 1, + .dma_mask_size = 40, .ppgtt_type = INTEL_PPGTT_ALIASING, .ppgtt_size = 31, .has_snoop = true, @@ -554,6 +565,7 @@ static const struct intel_device_info hsw_gt3_info = { G75_FEATURES, \ GEN(8), \ .has_logical_ring_contexts = 1, \ + .dma_mask_size = 39, \ .ppgtt_type = INTEL_PPGTT_FULL, \ .ppgtt_size = 48, \ .has_64bit_reloc = 1, \ @@ -602,6 +614,7 @@ static const struct intel_device_info chv_info = { .has_rps = true, .has_logical_ring_contexts = 1, .display.has_gmch = 1, + .dma_mask_size = 39, .ppgtt_type = INTEL_PPGTT_ALIASING, .ppgtt_size = 32, .has_reset_engine = 1, @@ -685,6 +698,7 @@ static const struct intel_device_info skl_gt4_info = { .has_logical_ring_contexts = 1, \ .has_logical_ring_preemption = 1, \ .has_gt_uc = 1, \ + .dma_mask_size = 39, \ .ppgtt_type = INTEL_PPGTT_FULL, \ .ppgtt_size = 48, \ .has_reset_engine = 1, \ diff --git a/drivers/gpu/drm/i915/intel_device_info.c b/drivers/gpu/drm/i915/intel_device_info.c index db8496b4c38d..91bb7891c70c 100644 --- a/drivers/gpu/drm/i915/intel_device_info.c +++ b/drivers/gpu/drm/i915/intel_device_info.c @@ -98,6 +98,7 @@ void intel_device_info_print_static(const struct intel_device_info *info, drm_printf(p, "platform: %s\n", intel_platform_name(info->platform)); drm_printf(p, "ppgtt-size: %d\n", info->ppgtt_size); drm_printf(p, "ppgtt-type: %d\n", info->ppgtt_type); + drm_printf(p, "dma_mask_size: %u\n", info->dma_mask_size); #define PRINT_FLAG(name) drm_printf(p, "%s: %s\n", #name, yesno(info->name)); DEV_INFO_FOR_EACH_FLAG(PRINT_FLAG); diff --git a/drivers/gpu/drm/i915/intel_device_info.h b/drivers/gpu/drm/i915/intel_device_info.h index cce6a72c5ebc..69c9257c6c6a 100644 --- a/drivers/gpu/drm/i915/intel_device_info.h +++ b/drivers/gpu/drm/i915/intel_device_info.h @@ -158,6 +158,8 @@ struct intel_device_info { enum intel_platform platform; + unsigned int dma_mask_size; /* available DMA address bits */ + enum intel_ppgtt_type ppgtt_type; unsigned int ppgtt_size; /* log2, e.g. 31/32/48 bits */