From patchwork Fri Aug 4 16:26:58 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Michal Wajdeczko X-Patchwork-Id: 9881661 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id CC0D9602B8 for ; Fri, 4 Aug 2017 16:27:49 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id BA108284B5 for ; Fri, 4 Aug 2017 16:27:49 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id AE4162890E; Fri, 4 Aug 2017 16:27:49 +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=-4.2 required=2.0 tests=BAYES_00, 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 4A98628926 for ; Fri, 4 Aug 2017 16:27:45 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 857036E454; Fri, 4 Aug 2017 16:27:29 +0000 (UTC) X-Original-To: intel-gfx@lists.freedesktop.org Delivered-To: intel-gfx@lists.freedesktop.org Received: from mga04.intel.com (mga04.intel.com [192.55.52.120]) by gabe.freedesktop.org (Postfix) with ESMTPS id EBEBB6E454 for ; Fri, 4 Aug 2017 16:27:27 +0000 (UTC) Received: from orsmga002.jf.intel.com ([10.7.209.21]) by fmsmga104.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 04 Aug 2017 09:27:27 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.41,321,1498546800"; d="scan'208";a="119829389" Received: from irvmail001.ir.intel.com ([163.33.26.43]) by orsmga002.jf.intel.com with ESMTP; 04 Aug 2017 09:27:25 -0700 Received: from mwajdecz-MOBL1.ger.corp.intel.com (mwajdecz-mobl1.ger.corp.intel.com [172.28.174.25]) by irvmail001.ir.intel.com (8.14.3/8.13.6/MailSET/Hub) with ESMTP id v74GRMdK010586; Fri, 4 Aug 2017 17:27:24 +0100 From: Michal Wajdeczko To: intel-gfx@lists.freedesktop.org Date: Fri, 4 Aug 2017 16:26:58 +0000 Message-Id: <20170804162712.20468-2-michal.wajdeczko@intel.com> X-Mailer: git-send-email 2.10.1.windows.1 In-Reply-To: <20170804162712.20468-1-michal.wajdeczko@intel.com> References: <20170804162712.20468-1-michal.wajdeczko@intel.com> Subject: [Intel-gfx] [PATCH 01/15] drm/i915/guc: Add support for data reporting in GuC responses X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.18 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-Virus-Scanned: ClamAV using ClamSMTP GuC may return additional data in the command status response. Format and meaning of this data is action specific. We will use this non-negative data as a new success return value. Signed-off-by: Michal Wajdeczko Cc: Oscar Mateo Cc: Michel Thierry Cc: Daniele Ceraolo Spurio --- drivers/gpu/drm/i915/intel_guc_ct.c | 14 +++++++------- drivers/gpu/drm/i915/intel_guc_fwif.h | 6 ++++++ drivers/gpu/drm/i915/intel_uc.c | 5 ++++- 3 files changed, 17 insertions(+), 8 deletions(-) diff --git a/drivers/gpu/drm/i915/intel_guc_ct.c b/drivers/gpu/drm/i915/intel_guc_ct.c index c4cbec1..1249868 100644 --- a/drivers/gpu/drm/i915/intel_guc_ct.c +++ b/drivers/gpu/drm/i915/intel_guc_ct.c @@ -387,9 +387,9 @@ static int ctch_send(struct intel_guc *guc, err = wait_for_response(desc, fence, status); if (unlikely(err)) return err; - if (*status != INTEL_GUC_STATUS_SUCCESS) + if (INTEL_GUC_RECV_TO_STATUS(*status) != INTEL_GUC_STATUS_SUCCESS) return -EIO; - return 0; + return INTEL_GUC_RECV_TO_DATA(*status); } /* @@ -399,18 +399,18 @@ static int intel_guc_send_ct(struct intel_guc *guc, const u32 *action, u32 len) { struct intel_guc_ct_channel *ctch = &guc->ct.host_channel; u32 status = ~0; /* undefined */ - int err; + int ret; mutex_lock(&guc->send_mutex); - err = ctch_send(guc, ctch, action, len, &status); - if (unlikely(err)) { + ret = ctch_send(guc, ctch, action, len, &status); + if (unlikely(ret < 0)) { DRM_ERROR("CT: send action %#X failed; err=%d status=%#X\n", - action[0], err, status); + action[0], ret, status); } mutex_unlock(&guc->send_mutex); - return err; + return ret; } /** diff --git a/drivers/gpu/drm/i915/intel_guc_fwif.h b/drivers/gpu/drm/i915/intel_guc_fwif.h index 5fa2860..98c0560 100644 --- a/drivers/gpu/drm/i915/intel_guc_fwif.h +++ b/drivers/gpu/drm/i915/intel_guc_fwif.h @@ -567,10 +567,16 @@ enum intel_guc_action { * command in SS0. The response is distinguishable from a command * by the fact that all the MASK bits are set. The remaining bits * give more detail. + * Bits [16:27] are reserved for optional data reporting. */ #define INTEL_GUC_RECV_MASK ((u32)0xF0000000) #define INTEL_GUC_RECV_IS_RESPONSE(x) ((u32)(x) >= INTEL_GUC_RECV_MASK) #define INTEL_GUC_RECV_STATUS(x) (INTEL_GUC_RECV_MASK | (x)) +#define INTEL_GUC_RECV_DATA_SHIFT 16 +#define INTEL_GUC_RECV_DATA_MASK (0xFFF << INTEL_GUC_RECV_DATA_SHIFT) +#define INTEL_GUC_RECV_TO_STATUS(x) ((x) & ~ INTEL_GUC_RECV_DATA_MASK) +#define INTEL_GUC_RECV_TO_DATA(x) (((x) & INTEL_GUC_RECV_DATA_MASK) >> \ + INTEL_GUC_RECV_DATA_SHIFT) /* GUC will return status back to SOFT_SCRATCH_O_REG */ enum intel_guc_status { diff --git a/drivers/gpu/drm/i915/intel_uc.c b/drivers/gpu/drm/i915/intel_uc.c index 27e072c..ff25477 100644 --- a/drivers/gpu/drm/i915/intel_uc.c +++ b/drivers/gpu/drm/i915/intel_uc.c @@ -502,7 +502,7 @@ int intel_guc_send_mmio(struct intel_guc *guc, const u32 *action, u32 len) INTEL_GUC_RECV_MASK, INTEL_GUC_RECV_MASK, 10, 10, &status); - if (status != INTEL_GUC_STATUS_SUCCESS) { + if (INTEL_GUC_RECV_TO_STATUS(status) != INTEL_GUC_STATUS_SUCCESS) { /* * Either the GuC explicitly returned an error (which * we convert to -EIO here) or no response at all was @@ -514,6 +514,9 @@ int intel_guc_send_mmio(struct intel_guc *guc, const u32 *action, u32 len) DRM_WARN("INTEL_GUC_SEND: Action 0x%X failed;" " ret=%d status=0x%08X response=0x%08X\n", action[0], ret, status, I915_READ(SOFT_SCRATCH(15))); + } else { + /* Use data encoded in status dword as return value */ + ret = INTEL_GUC_RECV_TO_DATA(status); } intel_uncore_forcewake_put(dev_priv, guc->send_regs.fw_domains);