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Mon, 2 Jan 2023 06:13:42 GMT Received: from quicinc.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 15.2.986.36; Sun, 1 Jan 2023 22:13:34 -0800 Date: Mon, 2 Jan 2023 11:43:30 +0530 From: Srivatsa Vaddagiri To: Elliot Berman CC: Bjorn Andersson , Jassi Brar , Murali Nalajala , Jonathan Corbet , Trilok Soni , "Carl van Schaik" , Prakruthi Deepak Heragu , Arnd Bergmann , Greg Kroah-Hartman , Rob Herring , "Krzysztof Kozlowski" , Bagas Sanjaya , Catalin Marinas , "Will Deacon" , Sudeep Holla , Mark Rutland , Lorenzo Pieralisi , "Dmitry Baryshkov" , , , , , , Subject: Re: [PATCH v8 09/28] mailbox: Add Gunyah message queue mailbox Message-ID: <20230102061330.GA1836549@quicinc.com> Reply-To: Srivatsa Vaddagiri References: <20221219225850.2397345-1-quic_eberman@quicinc.com> <20221219225850.2397345-10-quic_eberman@quicinc.com> MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Disposition: inline In-Reply-To: <20221219225850.2397345-10-quic_eberman@quicinc.com> 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-ORIG-GUID: zV24wA6ROSMieOl4ZzN1EyLV9jfPRiey X-Proofpoint-GUID: zV24wA6ROSMieOl4ZzN1EyLV9jfPRiey X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.205,Aquarius:18.0.923,Hydra:6.0.545,FMLib:17.11.122.1 definitions=2023-01-02_03,2022-12-30_01,2022-06-22_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 suspectscore=0 spamscore=0 malwarescore=0 adultscore=0 mlxlogscore=264 lowpriorityscore=0 impostorscore=0 clxscore=1011 phishscore=0 bulkscore=0 priorityscore=1501 mlxscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2212070000 definitions=main-2301020055 Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org * Elliot Berman [2022-12-19 14:58:30]: > +static inline bool gh_msgq_has_tx(struct gh_msgq *msgq) > +{ Consider possibility that msgq->tx_ghrc can be NULL? > + return msgq->tx_ghrsc->type == GUNYAH_RESOURCE_TYPE_MSGQ_TX; > +} > + > +static inline bool gh_msgq_has_rx(struct gh_msgq *msgq) > +{ Consider possibility that msgq->rx_ghrc can be NULL? > + return msgq->rx_ghrsc->type == GUNYAH_RESOURCE_TYPE_MSGQ_RX; > +} > + > +static irqreturn_t gh_msgq_rx_irq_handler(int irq, void *data) > +{ > + struct gh_msgq *msgq = data; > + struct gh_msgq_rx_data rx_data; > + unsigned long gh_err; > + ssize_t ret; > + bool ready = false; > + > + do { > + gh_err = gh_hypercall_msgq_recv(msgq->rx_ghrsc->capid, > + (uintptr_t)&rx_data.data, sizeof(rx_data.data), > + &rx_data.length, &ready); > + if (gh_err == GH_ERROR_OK) { > + mbox_chan_received_data(gh_msgq_chan(msgq), &rx_data); > + } else if (GH_ERROR_MSGQUEUE_EMPTY) { gh_err == GH_ERROR_MSGQUEUE_EMPTY > + break; > + } else { > + pr_warn("Failed to receive data from msgq for %s: %ld\n", > + msgq->mbox.dev ? dev_name(msgq->mbox.dev) : "", ret); > + break; > + } > + } while (ready); > + > + return IRQ_HANDLED; > +} From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 8AA10C4167B for ; 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charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org * Elliot Berman [2022-12-19 14:58:30]: > +static inline bool gh_msgq_has_tx(struct gh_msgq *msgq) > +{ Consider possibility that msgq->tx_ghrc can be NULL? > + return msgq->tx_ghrsc->type == GUNYAH_RESOURCE_TYPE_MSGQ_TX; > +} > + > +static inline bool gh_msgq_has_rx(struct gh_msgq *msgq) > +{ Consider possibility that msgq->rx_ghrc can be NULL? > + return msgq->rx_ghrsc->type == GUNYAH_RESOURCE_TYPE_MSGQ_RX; > +} > + > +static irqreturn_t gh_msgq_rx_irq_handler(int irq, void *data) > +{ > + struct gh_msgq *msgq = data; > + struct gh_msgq_rx_data rx_data; > + unsigned long gh_err; > + ssize_t ret; > + bool ready = false; > + > + do { > + gh_err = gh_hypercall_msgq_recv(msgq->rx_ghrsc->capid, > + (uintptr_t)&rx_data.data, sizeof(rx_data.data), > + &rx_data.length, &ready); > + if (gh_err == GH_ERROR_OK) { > + mbox_chan_received_data(gh_msgq_chan(msgq), &rx_data); > + } else if (GH_ERROR_MSGQUEUE_EMPTY) { gh_err == GH_ERROR_MSGQUEUE_EMPTY > + break; > + } else { > + pr_warn("Failed to receive data from msgq for %s: %ld\n", > + msgq->mbox.dev ? dev_name(msgq->mbox.dev) : "", ret); > + break; > + } > + } while (ready); > + > + return IRQ_HANDLED; > +} _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel