From patchwork Mon Oct 7 08:45:17 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ekansh Gupta X-Patchwork-Id: 833372 Received: from mx0a-0031df01.pphosted.com (mx0a-0031df01.pphosted.com [205.220.168.131]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 9EE1A18C32F; Mon, 7 Oct 2024 08:45:45 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=205.220.168.131 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1728290747; cv=none; b=Yu1kvh2yxcVX09YOhxh11g2jp8pUGLOeRZOOJwvsCmsT5KNhL1asZYDjk757qyj20ccl5LuOMRMteKeiqJbpCrnbvss98YjFtsqEHgU4vINB58NTz32/Vl19ZBst2ewjCUbzdpSXrnvI7Z/cBA1rMJ8VPwwfVwLtAdAhHtkk2eM= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1728290747; c=relaxed/simple; bh=M195vOWhBa+RcPea3T2ce880qTaxse75rPhnLOAwgZI=; h=From:To:CC:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=Ucam8fEFJK9NG3/m8i7lF3L7NdhijHfna1ElKMYaTF/FRLSHlHdDIoqo5BivUNFSPMyCAlRGAtW0El80lQCHZG54kmhXJTu/yE/h6NeMj0HBGsUASb0Sxr9HnlJuwXEESte4i1Vykcw+boZUT+0oi5P3l9Hg2ek/jmIilGr50jM= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=quicinc.com; spf=pass smtp.mailfrom=quicinc.com; dkim=pass (2048-bit key) header.d=quicinc.com header.i=@quicinc.com header.b=kNfSyOgD; arc=none smtp.client-ip=205.220.168.131 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=quicinc.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=quicinc.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=quicinc.com header.i=@quicinc.com header.b="kNfSyOgD" Received: from pps.filterd (m0279867.ppops.net [127.0.0.1]) by mx0a-0031df01.pphosted.com (8.18.1.2/8.18.1.2) with ESMTP id 4974TD8h032511; Mon, 7 Oct 2024 08:45:39 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=quicinc.com; h= cc:content-transfer-encoding:content-type:date:from:in-reply-to :message-id:mime-version:references:subject:to; s=qcppdkim1; bh= nBevgU321+ZkvO2ez5LU2yHZr2Ipcwcl+bm1EytCkY4=; b=kNfSyOgDES3S1VPO A4tHV5WNzMtz2aGI18AlXozElnAGF27VsOMXdNfgi+vIAyzRVSvebHtWT4mLCHCs soNdm600QXxzjpaIkIG0kiXCbsOKUluUDsUzx4v6tJX+zU78rNBkjuAdPKMMVrTV fC429j0bzUS0JgaVNs8k3gwI3ml49yYMKDFc4XmP1WGIjNa3zJFG4wSPXBEn7f+W uNsKmu8wPdOSOe9m97yicQ/6zd2VpLE8F+Pm4Zy0TGAFKY+VY50T2bG8454nFTtH pmJk91yeKYaWlDnzER7k0CruQ0FHod3FcAIcZUhovIrp7QQpywE+tOkRRIQyu+7z V4VIPw== Received: from nalasppmta01.qualcomm.com (Global_NAT1.qualcomm.com [129.46.96.20]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 422xv8bff8-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Mon, 07 Oct 2024 08:45:39 +0000 (GMT) Received: from nalasex01b.na.qualcomm.com (nalasex01b.na.qualcomm.com [10.47.209.197]) by NALASPPMTA01.qualcomm.com (8.18.1.2/8.18.1.2) with ESMTPS id 4978jc4q030796 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Mon, 7 Oct 2024 08:45:38 GMT Received: from hu-ekangupt-hyd.qualcomm.com (10.80.80.8) by nalasex01b.na.qualcomm.com (10.47.209.197) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1544.9; Mon, 7 Oct 2024 01:45:36 -0700 From: Ekansh Gupta To: , CC: , , , , , Subject: [PATCH v1 3/4] misc: fastrpc: Modify context id calculation for poll mode Date: Mon, 7 Oct 2024 14:15:17 +0530 Message-ID: <20241007084518.3649876-4-quic_ekangupt@quicinc.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20241007084518.3649876-1-quic_ekangupt@quicinc.com> References: <20241007084518.3649876-1-quic_ekangupt@quicinc.com> Precedence: bulk X-Mailing-List: linux-arm-msm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-ClientProxiedBy: nasanex01a.na.qualcomm.com (10.52.223.231) To nalasex01b.na.qualcomm.com (10.47.209.197) X-QCInternal: smtphost X-Proofpoint-Virus-Version: vendor=nai engine=6200 definitions=5800 signatures=585085 X-Proofpoint-ORIG-GUID: ccl-2WawCM_VKXkgP_eX6u3SlLX3l-PU X-Proofpoint-GUID: ccl-2WawCM_VKXkgP_eX6u3SlLX3l-PU X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1039,Hydra:6.0.680,FMLib:17.12.60.29 definitions=2024-09-06_09,2024-09-06_01,2024-09-02_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 mlxscore=0 impostorscore=0 phishscore=0 malwarescore=0 suspectscore=0 bulkscore=0 spamscore=0 mlxlogscore=999 adultscore=0 clxscore=1015 lowpriorityscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.19.0-2409260000 definitions=main-2410070061 Poll mode is a feature to be introduced which improves the fastrpc remote calls latency. For this feature, DSP expects the 4th to 7th bit of context id to be zero. Prepare context id in such a way that polling mode can be supported. Signed-off-by: Ekansh Gupta --- drivers/misc/fastrpc.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/drivers/misc/fastrpc.c b/drivers/misc/fastrpc.c index 54a562fc94fb..c008fcd95e15 100644 --- a/drivers/misc/fastrpc.c +++ b/drivers/misc/fastrpc.c @@ -40,7 +40,7 @@ #define FASTRPC_INIT_HANDLE 1 #define FASTRPC_DSP_UTILITIES_HANDLE 2 #define FASTRPC_MAX_STATIC_HANDLE (20) -#define FASTRPC_CTXID_MASK (0xFF0) +#define FASTRPC_CTXID_MASK (0xFF0000) #define INIT_FILELEN_MAX (2 * 1024 * 1024) #define INIT_FILE_NAMELEN_MAX (128) #define FASTRPC_DEVICE_NAME "fastrpc" @@ -559,7 +559,7 @@ static void fastrpc_context_free(struct kref *ref) fastrpc_buf_free(ctx->buf); spin_lock_irqsave(&cctx->lock, flags); - idr_remove(&cctx->ctx_idr, ctx->ctxid >> 4); + idr_remove(&cctx->ctx_idr, ctx->ctxid >> 16); spin_unlock_irqrestore(&cctx->lock, flags); kfree(ctx->perf); @@ -706,7 +706,7 @@ static struct fastrpc_invoke_ctx *fastrpc_context_alloc( spin_unlock_irqrestore(&cctx->lock, flags); goto err_idr; } - ctx->ctxid = ret << 4; + ctx->ctxid = ret << 16; spin_unlock_irqrestore(&cctx->lock, flags); kref_init(&ctx->refcount); @@ -2621,7 +2621,7 @@ static int fastrpc_rpmsg_callback(struct rpmsg_device *rpdev, void *data, if (len < sizeof(*rsp)) return -EINVAL; - ctxid = ((rsp->ctx & FASTRPC_CTXID_MASK) >> 4); + ctxid = ((rsp->ctx & FASTRPC_CTXID_MASK) >> 16); spin_lock_irqsave(&cctx->lock, flags); ctx = idr_find(&cctx->ctx_idr, ctxid);