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Thu, 1 Jul 2021 13:28:01 +0000 (GMT) Received: from smtp.tlslab.ibm.com (unknown [9.101.4.1]) by d06av26.portsmouth.uk.ibm.com (Postfix) with SMTP; Thu, 1 Jul 2021 13:28:00 +0000 (GMT) Received: from yukon.ibmuc.com (unknown [9.171.33.183]) by smtp.tlslab.ibm.com (Postfix) with ESMTP id 75BA822016C; Thu, 1 Jul 2021 15:28:00 +0200 (CEST) From: =?UTF-8?q?C=C3=A9dric=20Le=20Goater?= To: linuxppc-dev@lists.ozlabs.org Subject: [PATCH v2 08/32] powerpc/pseries/pci: Add a domain_free_irqs() handler Date: Thu, 1 Jul 2021 15:27:26 +0200 Message-Id: <20210701132750.1475580-9-clg@kaod.org> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20210701132750.1475580-1-clg@kaod.org> References: <20210701132750.1475580-1-clg@kaod.org> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable X-TM-AS-GCONF: 00 X-Proofpoint-ORIG-GUID: UVrSR6k1QdaLIBVFhnU6y2yBS3kYDxTC X-Proofpoint-GUID: UVrSR6k1QdaLIBVFhnU6y2yBS3kYDxTC X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.391, 18.0.790 definitions=2021-07-01_07:2021-07-01, 2021-07-01 signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 clxscore=1034 suspectscore=0 mlxlogscore=927 spamscore=0 mlxscore=0 malwarescore=0 impostorscore=0 priorityscore=1501 adultscore=0 phishscore=0 bulkscore=0 lowpriorityscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2104190000 definitions=main-2107010082 X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: =?UTF-8?q?C=C3=A9dric=20Le=20Goater?= Errors-To: linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Sender: "Linuxppc-dev" The RTAS firmware can not disable one MSI at a time. It's all or nothing. We need a custom free IRQ handler for that. Signed-off-by: C=C3=A9dric Le Goater --- arch/powerpc/platforms/pseries/msi.c | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) diff --git a/arch/powerpc/platforms/pseries/msi.c b/arch/powerpc/platform= s/pseries/msi.c index 86c6809ebac2..591cee9cbc9e 100644 --- a/arch/powerpc/platforms/pseries/msi.c +++ b/arch/powerpc/platforms/pseries/msi.c @@ -529,8 +529,24 @@ static int pseries_msi_ops_prepare(struct irq_domain= *domain, struct device *dev return rtas_prepare_msi_irqs(pdev, nvec, type, arg); } =20 +/* + * RTAS can not disable one MSI at a time. It's all or nothing. Do it + * at the end after all IRQs have been freed. + */ +static void pseries_msi_domain_free_irqs(struct irq_domain *domain, + struct device *dev) +{ + if (WARN_ON_ONCE(!dev_is_pci(dev))) + return; + + __msi_domain_free_irqs(domain, dev); + + rtas_disable_msi(to_pci_dev(dev)); +} + static struct msi_domain_ops pseries_pci_msi_domain_ops =3D { .msi_prepare =3D pseries_msi_ops_prepare, + .domain_free_irqs =3D pseries_msi_domain_free_irqs, }; =20 static void pseries_msi_shutdown(struct irq_data *d) --=20 2.31.1