From patchwork Thu Jun 24 07:05:13 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Matthew Brost X-Patchwork-Id: 12341089 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.7 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 33A78C49EA7 for ; Thu, 24 Jun 2021 06:48:32 +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 08441613CC for ; Thu, 24 Jun 2021 06:48:32 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 08441613CC 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 9E3AE6EA2F; Thu, 24 Jun 2021 06:47:41 +0000 (UTC) Received: from mga09.intel.com (mga09.intel.com [134.134.136.24]) by gabe.freedesktop.org (Postfix) with ESMTPS id A72A26EA11; Thu, 24 Jun 2021 06:47:31 +0000 (UTC) IronPort-SDR: XtM0sXKIN1EFLbf4ZHzz+MDBBCVwbctAQj+68QQtEcANUco9hnvZQmsaJlNE/lxE9ixvdTkqYV /U1J6a1WIcDQ== X-IronPort-AV: E=McAfee;i="6200,9189,10024"; a="207346781" X-IronPort-AV: E=Sophos;i="5.83,295,1616482800"; d="scan'208";a="207346781" Received: from orsmga004.jf.intel.com ([10.7.209.38]) by orsmga102.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 23 Jun 2021 23:47:26 -0700 IronPort-SDR: /cHmLQI2M1gl4nMk9Qwn/JlrI4f9y03RMkv7aAzn+EbhKKHIJWGYZR5EFn2289xq5iTleWTDfR FW3g+WvVj0dA== X-IronPort-AV: E=Sophos;i="5.83,295,1616482800"; d="scan'208";a="556390997" Received: from dhiatt-server.jf.intel.com ([10.54.81.3]) by orsmga004-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 23 Jun 2021 23:47:26 -0700 From: Matthew Brost To: , Date: Thu, 24 Jun 2021 00:05:13 -0700 Message-Id: <20210624070516.21893-45-matthew.brost@intel.com> X-Mailer: git-send-email 2.28.0 In-Reply-To: <20210624070516.21893-1-matthew.brost@intel.com> References: <20210624070516.21893-1-matthew.brost@intel.com> MIME-Version: 1.0 Subject: [Intel-gfx] [PATCH 44/47] drm/i915/guc: Connect reset modparam updates to GuC policy flags 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: , Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" From: John Harrison Changing the reset module parameter has no effect on a running GuC. The corresponding entry in the ADS must be updated and then the GuC informed via a Host2GuC message. The new debugfs interface to module parameters allows this to happen. However, connecting the parameter data address back to anything useful is messy. One option would be to pass a new private data structure address through instead of just the parameter pointer. However, that means having a new (and different) data structure for each parameter and a new (and different) write function for each parameter. This method keeps everything generic by instead using a string lookup on the directory entry name. Signed-off-by: John Harrison Signed-off-by: Matthew Brost Reviewed-by: Matthew Brost --- drivers/gpu/drm/i915/gt/uc/intel_guc_ads.c | 2 +- drivers/gpu/drm/i915/i915_debugfs_params.c | 31 ++++++++++++++++++++++ 2 files changed, 32 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/i915/gt/uc/intel_guc_ads.c b/drivers/gpu/drm/i915/gt/uc/intel_guc_ads.c index 2ad5fcd4e1b7..c6d0b762d82c 100644 --- a/drivers/gpu/drm/i915/gt/uc/intel_guc_ads.c +++ b/drivers/gpu/drm/i915/gt/uc/intel_guc_ads.c @@ -99,7 +99,7 @@ static int guc_action_policies_update(struct intel_guc *guc, u32 policy_offset) policy_offset }; - return intel_guc_send(guc, action, ARRAY_SIZE(action)); + return intel_guc_send_busy_loop(guc, action, ARRAY_SIZE(action), 0, true); } int intel_guc_global_policies_update(struct intel_guc *guc) diff --git a/drivers/gpu/drm/i915/i915_debugfs_params.c b/drivers/gpu/drm/i915/i915_debugfs_params.c index 4e2b077692cb..8ecd8b42f048 100644 --- a/drivers/gpu/drm/i915/i915_debugfs_params.c +++ b/drivers/gpu/drm/i915/i915_debugfs_params.c @@ -6,9 +6,20 @@ #include #include "i915_debugfs_params.h" +#include "gt/intel_gt.h" +#include "gt/uc/intel_guc.h" #include "i915_drv.h" #include "i915_params.h" +#define MATCH_DEBUGFS_NODE_NAME(_file, _name) (strcmp((_file)->f_path.dentry->d_name.name, (_name)) == 0) + +#define GET_I915(i915, name, ptr) \ + do { \ + struct i915_params *params; \ + params = container_of(((void *) (ptr)), typeof(*params), name); \ + (i915) = container_of(params, typeof(*(i915)), params); \ + } while(0) + /* int param */ static int i915_param_int_show(struct seq_file *m, void *data) { @@ -24,6 +35,16 @@ static int i915_param_int_open(struct inode *inode, struct file *file) return single_open(file, i915_param_int_show, inode->i_private); } +static int notify_guc(struct drm_i915_private *i915) +{ + int ret = 0; + + if (intel_uc_uses_guc_submission(&i915->gt.uc)) + ret = intel_guc_global_policies_update(&i915->gt.uc.guc); + + return ret; +} + static ssize_t i915_param_int_write(struct file *file, const char __user *ubuf, size_t len, loff_t *offp) @@ -81,8 +102,10 @@ static ssize_t i915_param_uint_write(struct file *file, const char __user *ubuf, size_t len, loff_t *offp) { + struct drm_i915_private *i915; struct seq_file *m = file->private_data; unsigned int *value = m->private; + unsigned int old = *value; int ret; ret = kstrtouint_from_user(ubuf, len, 0, value); @@ -95,6 +118,14 @@ static ssize_t i915_param_uint_write(struct file *file, *value = b; } + if (!ret && MATCH_DEBUGFS_NODE_NAME(file, "reset")) { + GET_I915(i915, reset, value); + + ret = notify_guc(i915); + if (ret) + *value = old; + } + return ret ?: len; }