From patchwork Thu Jul 1 16:53:21 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Michal Wajdeczko X-Patchwork-Id: 12354567 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=-16.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=unavailable 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 4AE5BC11F64 for ; Thu, 1 Jul 2021 16:53:37 +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 0998E613F7 for ; Thu, 1 Jul 2021 16:53:37 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 0998E613F7 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 11CF289A72; Thu, 1 Jul 2021 16:53:31 +0000 (UTC) Received: from mga09.intel.com (mga09.intel.com [134.134.136.24]) by gabe.freedesktop.org (Postfix) with ESMTPS id 5AB5F88635; Thu, 1 Jul 2021 16:53:29 +0000 (UTC) X-IronPort-AV: E=McAfee;i="6200,9189,10032"; a="208524743" X-IronPort-AV: E=Sophos;i="5.83,315,1616482800"; d="scan'208";a="208524743" Received: from orsmga002.jf.intel.com ([10.7.209.21]) by orsmga102.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 01 Jul 2021 09:53:27 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.83,315,1616482800"; d="scan'208";a="426222744" Received: from irvmail001.ir.intel.com ([10.43.11.63]) by orsmga002.jf.intel.com with ESMTP; 01 Jul 2021 09:53:25 -0700 Received: from mwajdecz-MOBL.ger.corp.intel.com (mwajdecz-MOBL.ger.corp.intel.com [10.249.146.9]) by irvmail001.ir.intel.com (8.14.3/8.13.6/MailSET/Hub) with ESMTP id 161GrOor018728; Thu, 1 Jul 2021 17:53:24 +0100 From: Michal Wajdeczko To: intel-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org Date: Thu, 1 Jul 2021 18:53:21 +0200 Message-Id: <20210701165321.2067-1-michal.wajdeczko@intel.com> X-Mailer: git-send-email 2.21.0 MIME-Version: 1.0 Subject: [Intel-gfx] [PATCH] drm/i915/guc: Improve GuC CTB ABI 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" Make CTB Header explicit and separate from CTB Message. Signed-off-by: Michal Wajdeczko Cc: Matthew Brost --- .../gt/uc/abi/guc_communication_ctb_abi.h | 51 +++++++++++-------- drivers/gpu/drm/i915/gt/uc/intel_guc_ct.c | 24 ++++----- 2 files changed, 43 insertions(+), 32 deletions(-) diff --git a/drivers/gpu/drm/i915/gt/uc/abi/guc_communication_ctb_abi.h b/drivers/gpu/drm/i915/gt/uc/abi/guc_communication_ctb_abi.h index e933ca02d0eb..90a86759e108 100644 --- a/drivers/gpu/drm/i915/gt/uc/abi/guc_communication_ctb_abi.h +++ b/drivers/gpu/drm/i915/gt/uc/abi/guc_communication_ctb_abi.h @@ -56,8 +56,9 @@ struct guc_ct_buffer_desc { } __packed; static_assert(sizeof(struct guc_ct_buffer_desc) == 64); + /** - * DOC: CTB Message + * DOC: CTB Header * * +---+-------+--------------------------------------------------------------+ * | | Bits | Description | @@ -71,21 +72,34 @@ static_assert(sizeof(struct guc_ct_buffer_desc) == 64); * | +-------+--------------------------------------------------------------+ * | | 7:0 | **NUM_DWORDS** - length of the CTB message (w/o header) | * +---+-------+--------------------------------------------------------------+ - * | 1 | 31:0 | optional (depends on FORMAT) | - * +---+-------+ | - * |...| | | - * +---+-------+ | - * | n | 31:0 | | + */ + +#define GUC_CTB_HDR_LEN 1u +#define GUC_CTB_HDR_0_FENCE (0xffff << 16) +#define GUC_CTB_HDR_0_FORMAT (0xf << 12) +#define GUC_CTB_FORMAT_HXG 0u +#define GUC_CTB_HDR_0_RESERVED (0xf << 8) +#define GUC_CTB_HDR_0_NUM_DWORDS (0xff << 0) +#define GUC_CTB_MAX_DWORDS 255u + +/** + * DOC: CTB Message + * + * +---+-------+--------------------------------------------------------------+ + * | | Bits | Description | + * +===+=======+==============================================================+ + * | 0 | 31:0 | `CTB Header`_ | + * +---+-------+--------------------------------------------------------------+ + * | 1 | 31:0 | +--------------------------------------------------------+ | + * +---+-------+ | | | + * |...| | | optional payload (depends on FORMAT) | | + * +---+-------+ | | | + * | n | 31:0 | +--------------------------------------------------------+ | * +---+-------+--------------------------------------------------------------+ */ -#define GUC_CTB_MSG_MIN_LEN 1u -#define GUC_CTB_MSG_MAX_LEN 256u -#define GUC_CTB_MSG_0_FENCE (0xffff << 16) -#define GUC_CTB_MSG_0_FORMAT (0xf << 12) -#define GUC_CTB_FORMAT_HXG 0u -#define GUC_CTB_MSG_0_RESERVED (0xf << 8) -#define GUC_CTB_MSG_0_NUM_DWORDS (0xff << 0) +#define GUC_CTB_MSG_MIN_LEN GUC_CTB_HDR_LEN +#define GUC_CTB_MSG_MAX_LEN (GUC_CTB_HDR_LEN + GUC_CTB_MAX_DWORDS) /** * DOC: CTB HXG Message @@ -93,13 +107,10 @@ static_assert(sizeof(struct guc_ct_buffer_desc) == 64); * +---+-------+--------------------------------------------------------------+ * | | Bits | Description | * +===+=======+==============================================================+ - * | 0 | 31:16 | FENCE | - * | +-------+--------------------------------------------------------------+ - * | | 15:12 | FORMAT = GUC_CTB_FORMAT_HXG_ | - * | +-------+--------------------------------------------------------------+ - * | | 11:8 | RESERVED = MBZ | - * | +-------+--------------------------------------------------------------+ - * | | 7:0 | NUM_DWORDS = length (in dwords) of the embedded HXG message | + * | 0 | 31:0 | `CTB Header`_ with: | + * | | | | + * | | | - FORMAT = GUC_CTB_FORMAT_HXG_ | + * | | | - NUM_DWORDS = **n** | * +---+-------+--------------------------------------------------------------+ * | 1 | 31:0 | +--------------------------------------------------------+ | * +---+-------+ | | | diff --git a/drivers/gpu/drm/i915/gt/uc/intel_guc_ct.c b/drivers/gpu/drm/i915/gt/uc/intel_guc_ct.c index 43409044528e..4236fc33d293 100644 --- a/drivers/gpu/drm/i915/gt/uc/intel_guc_ct.c +++ b/drivers/gpu/drm/i915/gt/uc/intel_guc_ct.c @@ -412,9 +412,9 @@ static int ct_write(struct intel_guc_ct *ct, * dw1: HXG header (including action code) * dw2+: action data */ - header = FIELD_PREP(GUC_CTB_MSG_0_FORMAT, GUC_CTB_FORMAT_HXG) | - FIELD_PREP(GUC_CTB_MSG_0_NUM_DWORDS, len) | - FIELD_PREP(GUC_CTB_MSG_0_FENCE, fence); + header = FIELD_PREP(GUC_CTB_HDR_0_FORMAT, GUC_CTB_FORMAT_HXG) | + FIELD_PREP(GUC_CTB_HDR_0_NUM_DWORDS, len) | + FIELD_PREP(GUC_CTB_HDR_0_FENCE, fence); hxg = FIELD_PREP(GUC_HXG_MSG_0_TYPE, GUC_HXG_TYPE_REQUEST) | FIELD_PREP(GUC_HXG_REQUEST_MSG_0_ACTION | @@ -646,7 +646,7 @@ static int ct_read(struct intel_guc_ct *ct, struct ct_incoming_msg **msg) head = (head + 1) % size; /* message len with header */ - len = FIELD_GET(GUC_CTB_MSG_0_NUM_DWORDS, header) + GUC_CTB_MSG_MIN_LEN; + len = FIELD_GET(GUC_CTB_HDR_0_NUM_DWORDS, header) + GUC_CTB_HDR_LEN; if (unlikely(len > (u32)available)) { CT_ERROR(ct, "Incomplete message %*ph %*ph %*ph\n", 4, &header, @@ -691,9 +691,9 @@ static int ct_read(struct intel_guc_ct *ct, struct ct_incoming_msg **msg) static int ct_handle_response(struct intel_guc_ct *ct, struct ct_incoming_msg *response) { - u32 len = FIELD_GET(GUC_CTB_MSG_0_NUM_DWORDS, response->msg[0]); - u32 fence = FIELD_GET(GUC_CTB_MSG_0_FENCE, response->msg[0]); - const u32 *hxg = &response->msg[GUC_CTB_MSG_MIN_LEN]; + u32 len = FIELD_GET(GUC_CTB_HDR_0_NUM_DWORDS, response->msg[0]); + u32 fence = FIELD_GET(GUC_CTB_HDR_0_FENCE, response->msg[0]); + const u32 *hxg = &response->msg[GUC_CTB_HDR_LEN]; const u32 *data = &hxg[GUC_HXG_MSG_MIN_LEN]; u32 datalen = len - GUC_HXG_MSG_MIN_LEN; struct ct_request *req; @@ -750,8 +750,8 @@ static int ct_process_request(struct intel_guc_ct *ct, struct ct_incoming_msg *r u32 hxg_len, action, len; int ret; - hxg = &request->msg[GUC_CTB_MSG_MIN_LEN]; - hxg_len = request->size - GUC_CTB_MSG_MIN_LEN; + hxg = &request->msg[GUC_CTB_HDR_LEN]; + hxg_len = request->size - GUC_CTB_HDR_LEN; payload = &hxg[GUC_HXG_MSG_MIN_LEN]; action = FIELD_GET(GUC_HXG_EVENT_MSG_0_ACTION, hxg[0]); len = hxg_len - GUC_HXG_MSG_MIN_LEN; @@ -818,7 +818,7 @@ static void ct_incoming_request_worker_func(struct work_struct *w) static int ct_handle_event(struct intel_guc_ct *ct, struct ct_incoming_msg *request) { - const u32 *hxg = &request->msg[GUC_CTB_MSG_MIN_LEN]; + const u32 *hxg = &request->msg[GUC_CTB_HDR_LEN]; unsigned long flags; GEM_BUG_ON(FIELD_GET(GUC_HXG_MSG_0_TYPE, hxg[0]) != GUC_HXG_TYPE_EVENT); @@ -840,7 +840,7 @@ static int ct_handle_hxg(struct intel_guc_ct *ct, struct ct_incoming_msg *msg) if (unlikely(msg->size < GUC_CTB_HXG_MSG_MIN_LEN)) return -EBADMSG; - hxg = &msg->msg[GUC_CTB_MSG_MIN_LEN]; + hxg = &msg->msg[GUC_CTB_HDR_LEN]; origin = FIELD_GET(GUC_HXG_MSG_0_ORIGIN, hxg[0]); if (unlikely(origin != GUC_HXG_ORIGIN_GUC)) { @@ -871,7 +871,7 @@ static int ct_handle_hxg(struct intel_guc_ct *ct, struct ct_incoming_msg *msg) static void ct_handle_msg(struct intel_guc_ct *ct, struct ct_incoming_msg *msg) { - u32 format = FIELD_GET(GUC_CTB_MSG_0_FORMAT, msg->msg[0]); + u32 format = FIELD_GET(GUC_CTB_HDR_0_FORMAT, msg->msg[0]); int err; if (format == GUC_CTB_FORMAT_HXG)