From patchwork Fri Sep 29 07:00:27 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ekansh Gupta X-Patchwork-Id: 146444 Return-Path: Delivered-To: ouuuleilei@gmail.com Received: by 2002:a59:cae8:0:b0:403:3b70:6f57 with SMTP id r8csp3845138vqu; Fri, 29 Sep 2023 00:37:27 -0700 (PDT) X-Google-Smtp-Source: AGHT+IE6AquOLPNb7TYAd561XLr8PAw3bqgHYdoOU7PyUKCbZyzxUGCkTJmrC2uBcMCY0azrADy8 X-Received: by 2002:a17:902:ab47:b0:1bd:f314:7896 with SMTP id ij7-20020a170902ab4700b001bdf3147896mr2607776plb.25.1695973046963; Fri, 29 Sep 2023 00:37:26 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1695973046; cv=none; d=google.com; s=arc-20160816; b=XLQP8YD4KVVZF0BUtpVJAKklubmxyl/6P9Y4XMPVauqRzqbX1f3eD+rBUlV7w2imeZ 6zPwO9rIUDcSJOY0sVbfYMvKvY//3zbqxhMdEQf3BwH4bUBcT0925BolONZbCZJUnyBp XJRUHTQ/E0pMzt39eEvD7o8fKJWteFr1lLQL8BPs7CFTXUlUSsE8ov+fllcj+6mjPuMD cdVF9owV40F44MHpH9pjb9hp/9d7NcXpyGRcE3qxeq/5XvkhCM9a7Z9oyLLnbvS/MeG9 iY4M2ZyeszzXoeJuPHZValnAtybwl0PxqY8IcFj+4RQfGLHkLkOJGRq60W/jMqsROQ5X JNnQ== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:mime-version:references:in-reply-to:message-id :date:subject:cc:to:from:dkim-signature; bh=OahX4Qn4vZeug3KfmhdADRcSN6wDqgD8leeIgsbFbgY=; fh=IQ68kbvYFCSlyXdHKXkbdUfoRSl+ok1hAWwFRWAAo5U=; b=eX9um6b6JjS9FgZqkQCceaH6if6fi2jepvODznJ/8cvJIx/kYwmbmY0zCCX8U2VgRq rmFvrLKK44Th3uvfLbSIB9Sr38q2ZsH2WaQWwqnPttrhSdbuT4Cn12dqnudMhteIGhM2 l1oW9CLrWq56nveG2J3ze2x9YeEmAsU77ze3jmvEGV79SjPFwjuugMeo1G86tvNc3fDv awk2W67/DhScpuc4SP3RcaTOXacj7X7OanXEa3x8QHl71trlHi/CovVm8brIDYylwqX7 kCGWnExprAc816YXSsmVsDLsCpe7AiArCCEgo/M2Jj/oGI/qA5q54qdowm3mBHgWS7CF Z4eQ== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@quicinc.com header.s=qcppdkim1 header.b=IbpttYbi; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.35 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=quicinc.com Received: from groat.vger.email (groat.vger.email. [23.128.96.35]) by mx.google.com with ESMTPS id j11-20020a170902da8b00b001c62139b164si13082866plx.38.2023.09.29.00.37.26 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 29 Sep 2023 00:37:26 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.35 as permitted sender) client-ip=23.128.96.35; Authentication-Results: mx.google.com; dkim=pass header.i=@quicinc.com header.s=qcppdkim1 header.b=IbpttYbi; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.35 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=quicinc.com Received: from out1.vger.email (depot.vger.email [IPv6:2620:137:e000::3:0]) by groat.vger.email (Postfix) with ESMTP id 5C0F583CDFC9; Fri, 29 Sep 2023 00:01:18 -0700 (PDT) X-Virus-Status: Clean X-Virus-Scanned: clamav-milter 0.103.10 at groat.vger.email Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232743AbjI2HBB (ORCPT + 20 others); Fri, 29 Sep 2023 03:01:01 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:54916 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232519AbjI2HA5 (ORCPT ); Fri, 29 Sep 2023 03:00:57 -0400 Received: from mx0b-0031df01.pphosted.com (mx0b-0031df01.pphosted.com [205.220.180.131]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 170B61A7; Fri, 29 Sep 2023 00:00:54 -0700 (PDT) Received: from pps.filterd (m0279873.ppops.net [127.0.0.1]) by mx0a-0031df01.pphosted.com (8.17.1.19/8.17.1.19) with ESMTP id 38T6h76a007780; Fri, 29 Sep 2023 07:00:52 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=quicinc.com; h=from : to : cc : subject : date : message-id : in-reply-to : references : mime-version : content-type; s=qcppdkim1; bh=OahX4Qn4vZeug3KfmhdADRcSN6wDqgD8leeIgsbFbgY=; b=IbpttYbi3tcLQRne/VnutiOYeyatTIku65wiEpHBnlVbeRhzes17cG+FRzLW13gZ8qYc o9/QqO5xToZJznoCAn8JA0h3N6I8cwK29LC3giNfj81mR9nSdKCivmOZECNtEmkDiSPO lI916GKvIMLJFCUcnu4QAHA1Tk1TMQFQ6SbL+OYhBj2MiLg7z6cN5XFsSxKuZlkO/cQb J7efGHmsqZyXZqQHKru2pzRlqN0Py2LnvkP36VDh4kgPDEmgS49vZFN4IsqM76nbsgVR OJ/yjb+7mfrFEqJQbD4g6Rs4xHWI+iHmrpNTpp7acbQXl0v6ie+Ccxl3hcB/XGc1BGqQ Rg== Received: from nalasppmta01.qualcomm.com (Global_NAT1.qualcomm.com [129.46.96.20]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 3td24uaqv0-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Fri, 29 Sep 2023 07:00:51 +0000 Received: from nalasex01b.na.qualcomm.com (nalasex01b.na.qualcomm.com [10.47.209.197]) by NALASPPMTA01.qualcomm.com (8.17.1.5/8.17.1.5) with ESMTPS id 38T70o34025024 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Fri, 29 Sep 2023 07:00:50 GMT Received: from ekangupt-linux.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 15.2.1118.36; Fri, 29 Sep 2023 00:00:47 -0700 From: Ekansh Gupta To: , CC: Ekansh Gupta , , , , Subject: [PATCH v1 1/4] misc: fastrpc: Add early wakeup support for fastRPC driver Date: Fri, 29 Sep 2023 12:30:27 +0530 Message-ID: <1695970830-12331-2-git-send-email-quic_ekangupt@quicinc.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1695970830-12331-1-git-send-email-quic_ekangupt@quicinc.com> References: <1695970830-12331-1-git-send-email-quic_ekangupt@quicinc.com> MIME-Version: 1.0 X-Originating-IP: [10.80.80.8] X-ClientProxiedBy: nasanex01b.na.qualcomm.com (10.46.141.250) 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-GUID: v1XXwNpN15DqP__a_3o4GjJkFjmjB7T8 X-Proofpoint-ORIG-GUID: v1XXwNpN15DqP__a_3o4GjJkFjmjB7T8 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.267,Aquarius:18.0.980,Hydra:6.0.619,FMLib:17.11.176.26 definitions=2023-09-29_04,2023-09-28_03,2023-05-22_02 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 clxscore=1015 malwarescore=0 suspectscore=0 impostorscore=0 lowpriorityscore=0 spamscore=0 priorityscore=1501 mlxscore=0 mlxlogscore=999 adultscore=0 bulkscore=0 phishscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2309180000 definitions=main-2309290059 X-Spam-Status: No, score=-0.9 required=5.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS autolearn=unavailable autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on groat.vger.email Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-Greylist: Sender passed SPF test, not delayed by milter-greylist-4.6.4 (groat.vger.email [0.0.0.0]); Fri, 29 Sep 2023 00:01:18 -0700 (PDT) X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-THRID: 1778356633796162650 X-GMAIL-MSGID: 1778356633796162650 CPU wake up and context switch latency are significant in FastRPC overhead for remote calls. As part of this change, DSP sends early signal of completion to CPU and FastRPC driver detects early signal on the given context and starts polling on a memory for actual completion. Multiple different response flags are added to support DSP user early hint of approximate time of completion, early response from DSP user to wake up CPU and poll on memory for actual completion. Complete signal is also added which is sent by DSP user in case of timeout after early response is sent. Signed-off-by: Ekansh Gupta --- drivers/misc/fastrpc.c | 265 ++++++++++++++++++++++++++++++++++++++++++++++--- 1 file changed, 251 insertions(+), 14 deletions(-) diff --git a/drivers/misc/fastrpc.c b/drivers/misc/fastrpc.c index 8023da4..3facffd 100644 --- a/drivers/misc/fastrpc.c +++ b/drivers/misc/fastrpc.c @@ -106,6 +106,19 @@ #define USER_PD (1) #define SENSORS_PD (2) +#define FASTRPC_RSP_VERSION2 2 +/* Early wake up poll completion number received from remoteproc */ +#define FASTRPC_EARLY_WAKEUP_POLL (0xabbccdde) +/* timeout in us for polling until memory barrier */ +#define FASTRPC_POLL_TIME_MEM_UPDATE (500) +/* timeout in us for busy polling after early response from remoteproc */ +#define FASTRPC_POLL_TIME (4000) +/* timeout in us for polling completion signal after user early hint */ +#define FASTRPC_USER_EARLY_HINT_TIMEOUT (500) +/* CPU feature information to DSP */ +#define FASTRPC_CPUINFO_DEFAULT (0) +#define FASTRPC_CPUINFO_EARLY_WAKEUP (1) + #define miscdev_to_fdevice(d) container_of(d, struct fastrpc_device, miscdev) #define PERF_END ((void)0) @@ -129,6 +142,15 @@ (uint64_t *)(perf_ptr + offset)\ : (uint64_t *)NULL) : (uint64_t *)NULL) +enum fastrpc_response_flags { + NORMAL_RESPONSE = 0, + EARLY_RESPONSE = 1, + USER_EARLY_SIGNAL = 2, + COMPLETE_SIGNAL = 3, + STATUS_RESPONSE = 4, + POLL_MODE = 5, +}; + static const char *domains[FASTRPC_DEV_MAX] = { "adsp", "mdsp", "sdsp", "cdsp"}; struct fastrpc_phy_page { @@ -206,6 +228,14 @@ struct fastrpc_invoke_rsp { int retval; /* invoke return value */ }; +struct fastrpc_invoke_rspv2 { + u64 ctx; /* invoke caller context */ + int retval; /* invoke return value */ + u32 flags; /* early response flags */ + u32 early_wake_time; /* user hint in us */ + u32 version; /* version number */ +}; + struct fastrpc_buf_overlap { u64 start; u64 end; @@ -272,11 +302,17 @@ struct fastrpc_invoke_ctx { int pid; int tgid; u32 sc; + /* user hint of completion time in us */ + u32 early_wake_time; u32 *crc; u64 *perf_kernel; u64 *perf_dsp; u64 ctxid; u64 msg_sz; + /* work done status flag */ + bool is_work_done; + /* response flags from remote processor */ + enum fastrpc_response_flags rsp_flags; struct kref refcount; struct list_head node; /* list of ctxs */ struct completion work; @@ -321,7 +357,9 @@ struct fastrpc_channel_ctx { struct list_head invoke_interrupted_mmaps; bool secure; bool unsigned_support; + bool cpuinfo_status; u64 dma_mask; + u64 cpuinfo_todsp; }; struct fastrpc_device { @@ -352,13 +390,21 @@ struct fastrpc_user { struct mutex mutex; }; +struct fastrpc_ctrl_latency { + u32 enable; /* latency control enable */ + u32 latency; /* latency request in us */ +}; + struct fastrpc_ctrl_smmu { u32 sharedcb; /* Set to SMMU share context bank */ }; struct fastrpc_internal_control { u32 req; - struct fastrpc_ctrl_smmu smmu; + union { + struct fastrpc_ctrl_latency lp; + struct fastrpc_ctrl_smmu smmu; + }; }; static inline int64_t getnstimediff(struct timespec64 *start) @@ -692,6 +738,8 @@ static struct fastrpc_invoke_ctx *fastrpc_context_alloc( ctx->pid = current->pid; ctx->tgid = user->tgid; ctx->cctx = cctx; + ctx->rsp_flags = NORMAL_RESPONSE; + ctx->is_work_done = false; init_completion(&ctx->work); INIT_WORK(&ctx->put_work, fastrpc_context_put_wq); @@ -1300,6 +1348,115 @@ static int fastrpc_invoke_send(struct fastrpc_session_ctx *sctx, } +static int poll_for_remote_response(struct fastrpc_invoke_ctx *ctx, u32 timeout) +{ + int err = -EIO, ii = 0, jj = 0; + u32 sc = ctx->sc; + struct fastrpc_invoke_buf *list; + struct fastrpc_phy_page *pages; + u64 *fdlist = NULL; + u32 *crclist = NULL, *poll = NULL; + unsigned int inbufs, outbufs, handles; + + /* calculate poll memory location */ + inbufs = REMOTE_SCALARS_INBUFS(sc); + outbufs = REMOTE_SCALARS_OUTBUFS(sc); + handles = REMOTE_SCALARS_INHANDLES(sc) + REMOTE_SCALARS_OUTHANDLES(sc); + list = fastrpc_invoke_buf_start(ctx->rpra, ctx->nscalars); + pages = fastrpc_phy_page_start(list, ctx->nscalars); + fdlist = (u64 *)(pages + inbufs + outbufs + handles); + crclist = (u32 *)(fdlist + FASTRPC_MAX_FDLIST); + poll = (u32 *)(crclist + FASTRPC_MAX_CRCLIST); + + /* poll on memory for DSP response. Return failure on timeout */ + for (ii = 0, jj = 0; ii < timeout; ii++, jj++) { + if (*poll == FASTRPC_EARLY_WAKEUP_POLL) { + /* Remote processor sent early response */ + err = 0; + break; + } + if (jj == FASTRPC_POLL_TIME_MEM_UPDATE) { + /* Wait for DSP to finish updating poll memory */ + rmb(); + jj = 0; + } + udelay(1); + } + return err; +} + +static inline int fastrpc_wait_for_response(struct fastrpc_invoke_ctx *ctx, + u32 kernel) +{ + int interrupted = 0; + + if (kernel) + wait_for_completion(&ctx->work); + else + interrupted = wait_for_completion_interruptible(&ctx->work); + + return interrupted; +} + +static void fastrpc_wait_for_completion(struct fastrpc_invoke_ctx *ctx, + int *ptr_interrupted, u32 kernel) +{ + int err = 0, jj = 0; + bool wait_resp = false; + u32 wTimeout = FASTRPC_USER_EARLY_HINT_TIMEOUT; + u32 wakeTime = ctx->early_wake_time; + + do { + switch (ctx->rsp_flags) { + /* try polling on completion with timeout */ + case USER_EARLY_SIGNAL: + /* try wait if completion time is less than timeout */ + /* disable preempt to avoid context switch latency */ + preempt_disable(); + jj = 0; + wait_resp = false; + for (; wakeTime < wTimeout && jj < wTimeout; jj++) { + wait_resp = try_wait_for_completion(&ctx->work); + if (wait_resp) + break; + udelay(1); + } + preempt_enable(); + if (!wait_resp) { + *ptr_interrupted = fastrpc_wait_for_response(ctx, kernel); + if (*ptr_interrupted || ctx->is_work_done) + return; + } + break; + /* busy poll on memory for actual job done */ + case EARLY_RESPONSE: + err = poll_for_remote_response(ctx, FASTRPC_POLL_TIME); + /* Mark job done if poll on memory successful */ + /* Wait for completion if poll on memory timeout */ + if (!err) { + ctx->is_work_done = true; + return; + } + if (!ctx->is_work_done) { + *ptr_interrupted = fastrpc_wait_for_response(ctx, kernel); + if (*ptr_interrupted || ctx->is_work_done) + return; + } + break; + case COMPLETE_SIGNAL: + case NORMAL_RESPONSE: + *ptr_interrupted = fastrpc_wait_for_response(ctx, kernel); + if (*ptr_interrupted || ctx->is_work_done) + return; + break; + default: + *ptr_interrupted = -EBADR; + dev_err(ctx->fl->sctx->dev, "unsupported response type:0x%x\n", ctx->rsp_flags); + break; + } + } while (!ctx->is_work_done); +} + static void fastrpc_update_invoke_count(u32 handle, u64 *perf_counter, struct timespec64 *invoket) { @@ -1322,7 +1479,7 @@ static int fastrpc_internal_invoke(struct fastrpc_user *fl, u32 kernel, struct fastrpc_invoke *inv = &invoke->inv; u32 handle, sc; u64 *perf_counter = NULL; - int err = 0, perferr = 0; + int err = 0, perferr = 0, interrupted = 0; struct timespec64 invoket = {0}; if (fl->profile) @@ -1373,15 +1530,17 @@ static int fastrpc_internal_invoke(struct fastrpc_user *fl, u32 kernel, PERF_END); wait: - if (kernel) { - if (!wait_for_completion_timeout(&ctx->work, 10 * HZ)) - err = -ETIMEDOUT; - } else { - err = wait_for_completion_interruptible(&ctx->work); + fastrpc_wait_for_completion(ctx, &interrupted, kernel); + if (interrupted != 0) { + err = interrupted; + goto bail; } - - if (err) + if (!ctx->is_work_done) { + err = -ETIMEDOUT; + dev_err(fl->sctx->dev, "Error: Invalid workdone state for handle 0x%x, sc 0x%x\n", + handle, sc); goto bail; + } /* Check the response from remote dsp */ err = ctx->retval; @@ -2046,6 +2205,36 @@ static int fastrpc_get_info_from_kernel(struct fastrpc_ioctl_capability *cap, return 0; } +static int fastrpc_send_cpuinfo_to_dsp(struct fastrpc_user *fl) +{ + int err = 0; + u64 cpuinfo = 0; + struct fastrpc_invoke_args args[1]; + struct fastrpc_enhanced_invoke ioctl; + + if (!fl) + return -EBADF; + + cpuinfo = fl->cctx->cpuinfo_todsp; + /* return success if already updated to remote processor */ + if (fl->cctx->cpuinfo_status) + return 0; + + args[0].ptr = (u64)(uintptr_t)&cpuinfo; + args[0].length = sizeof(cpuinfo); + args[0].fd = -1; + + ioctl.inv.handle = FASTRPC_DSP_UTILITIES_HANDLE; + ioctl.inv.sc = FASTRPC_SCALARS(1, 1, 0); + ioctl.inv.args = (__u64)args; + + err = fastrpc_internal_invoke(fl, true, &ioctl); + if (!err) + fl->cctx->cpuinfo_status = true; + + return err; +} + static int fastrpc_get_dsp_info(struct fastrpc_user *fl, char __user *argp) { struct fastrpc_ioctl_capability cap = {0}; @@ -2395,6 +2584,8 @@ static long fastrpc_device_ioctl(struct file *file, unsigned int cmd, break; case FASTRPC_IOCTL_INIT_ATTACH: err = fastrpc_init_attach(fl, ROOT_PD); + if (!err) + fastrpc_send_cpuinfo_to_dsp(fl); break; case FASTRPC_IOCTL_INIT_ATTACH_SNS: err = fastrpc_init_attach(fl, SENSORS_PD); @@ -2615,6 +2806,7 @@ static int fastrpc_rpmsg_probe(struct rpmsg_device *rpdev) err = fastrpc_device_register(rdev, data, secure_dsp, domains[domain_id]); if (err) goto fdev_error; + data->cpuinfo_todsp = FASTRPC_CPUINFO_DEFAULT; break; case CDSP_DOMAIN_ID: data->unsigned_support = true; @@ -2626,6 +2818,7 @@ static int fastrpc_rpmsg_probe(struct rpmsg_device *rpdev) err = fastrpc_device_register(rdev, data, false, domains[domain_id]); if (err) goto fdev_error; + data->cpuinfo_todsp = FASTRPC_CPUINFO_EARLY_WAKEUP; break; default: err = -EINVAL; @@ -2668,10 +2861,12 @@ static void fastrpc_notify_users(struct fastrpc_user *user) spin_lock(&user->lock); list_for_each_entry(ctx, &user->pending, node) { ctx->retval = -EPIPE; + ctx->is_work_done = true; complete(&ctx->work); } list_for_each_entry(ctx, &user->interrupted, node) { ctx->retval = -EPIPE; + ctx->is_work_done = true; complete(&ctx->work); } spin_unlock(&user->lock); @@ -2708,31 +2903,73 @@ static void fastrpc_rpmsg_remove(struct rpmsg_device *rpdev) fastrpc_channel_ctx_put(cctx); } +static void fastrpc_notify_user_ctx(struct fastrpc_invoke_ctx *ctx, int retval, + u32 rsp_flags, u32 early_wake_time) +{ + ctx->retval = retval; + ctx->rsp_flags = (enum fastrpc_response_flags)rsp_flags; + switch (rsp_flags) { + case NORMAL_RESPONSE: + case COMPLETE_SIGNAL: + /* normal and complete response with return value */ + ctx->is_work_done = true; + complete(&ctx->work); + break; + case USER_EARLY_SIGNAL: + /* user hint of approximate time of completion */ + ctx->early_wake_time = early_wake_time; + break; + case EARLY_RESPONSE: + /* rpc framework early response with return value */ + complete(&ctx->work); + break; + default: + break; + } +} + static int fastrpc_rpmsg_callback(struct rpmsg_device *rpdev, void *data, int len, void *priv, u32 addr) { struct fastrpc_channel_ctx *cctx = dev_get_drvdata(&rpdev->dev); struct fastrpc_invoke_rsp *rsp = data; + struct fastrpc_invoke_rspv2 *rspv2 = NULL; struct fastrpc_invoke_ctx *ctx; unsigned long flags; unsigned long ctxid; + u32 rsp_flags = 0; + u32 early_wake_time = 0; if (len < sizeof(*rsp)) return -EINVAL; + if (len >= sizeof(*rspv2)) { + rspv2 = data; + if (rspv2) { + early_wake_time = rspv2->early_wake_time; + rsp_flags = rspv2->flags; + } + } ctxid = ((rsp->ctx & FASTRPC_CTXID_MASK) >> 4); spin_lock_irqsave(&cctx->lock, flags); ctx = idr_find(&cctx->ctx_idr, ctxid); - spin_unlock_irqrestore(&cctx->lock, flags); if (!ctx) { - dev_err(&rpdev->dev, "No context ID matches response\n"); - return -ENOENT; + dev_info(&cctx->rpdev->dev, "Warning: No context ID matches response\n"); + spin_unlock_irqrestore(&cctx->lock, flags); + return 0; } - ctx->retval = rsp->retval; - complete(&ctx->work); + if (rspv2) { + if (rspv2->version != FASTRPC_RSP_VERSION2) { + dev_err(&cctx->rpdev->dev, "Incorrect response version %d\n", rspv2->version); + spin_unlock_irqrestore(&cctx->lock, flags); + return -EINVAL; + } + } + fastrpc_notify_user_ctx(ctx, rsp->retval, rsp_flags, early_wake_time); + spin_unlock_irqrestore(&cctx->lock, flags); /* * The DMA buffer associated with the context cannot be freed in