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Fri, 30 Apr 2021 08:04:17 +0000 (GMT) Received: from smtp.tlslab.ibm.com (unknown [9.101.4.1]) by d06av24.portsmouth.uk.ibm.com (Postfix) with SMTP; Fri, 30 Apr 2021 08:04:17 +0000 (GMT) Received: from yukon.ibmuc.com (unknown [9.171.40.192]) by smtp.tlslab.ibm.com (Postfix) with ESMTP id B58ED2200B7; Fri, 30 Apr 2021 10:04:16 +0200 (CEST) From: =?UTF-8?q?C=C3=A9dric=20Le=20Goater?= To: linuxppc-dev@lists.ozlabs.org Subject: [PATCH 10/31] powerpc/pseries/pci: Add support of MSI domains to PHB hotplug Date: Fri, 30 Apr 2021 10:03:46 +0200 Message-Id: <20210430080407.4030767-11-clg@kaod.org> X-Mailer: git-send-email 2.26.3 In-Reply-To: <20210430080407.4030767-1-clg@kaod.org> References: <20210430080407.4030767-1-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-GUID: D6HSpYs357OKTJ-5JM55Nx_3deP7S3qR X-Proofpoint-ORIG-GUID: D6HSpYs357OKTJ-5JM55Nx_3deP7S3qR X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.391, 18.0.761 definitions=2021-04-30_05:2021-04-28, 2021-04-30 signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 mlxlogscore=871 impostorscore=0 bulkscore=0 clxscore=1034 malwarescore=0 suspectscore=0 adultscore=0 spamscore=0 lowpriorityscore=0 priorityscore=1501 phishscore=0 mlxscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2104060000 definitions=main-2104300056 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" Simply allocate or release the MSI domains when a PHB is inserted in or removed from the machine. Signed-off-by: C=C3=A9dric Le Goater --- arch/powerpc/platforms/pseries/pseries.h | 1 + arch/powerpc/platforms/pseries/msi.c | 10 ++++++++++ arch/powerpc/platforms/pseries/pci_dlpar.c | 4 ++++ 3 files changed, 15 insertions(+) diff --git a/arch/powerpc/platforms/pseries/pseries.h b/arch/powerpc/plat= forms/pseries/pseries.h index 91cf2afcf423..57bf4c2091e1 100644 --- a/arch/powerpc/platforms/pseries/pseries.h +++ b/arch/powerpc/platforms/pseries/pseries.h @@ -88,6 +88,7 @@ int pseries_root_bridge_prepare(struct pci_host_bridge = *bridge); =20 extern struct pci_controller_ops pseries_pci_controller_ops; int pseries_msi_allocate_domains(struct pci_controller *phb); +void pseries_msi_free_domains(struct pci_controller *phb); =20 unsigned long pseries_memory_block_size(void); =20 diff --git a/arch/powerpc/platforms/pseries/msi.c b/arch/powerpc/platform= s/pseries/msi.c index da9d63a088bb..d1470941cadf 100644 --- a/arch/powerpc/platforms/pseries/msi.c +++ b/arch/powerpc/platforms/pseries/msi.c @@ -733,6 +733,16 @@ int pseries_msi_allocate_domains(struct pci_controll= er *phb) return __pseries_msi_allocate_domains(phb, count); } =20 +void pseries_msi_free_domains(struct pci_controller *phb) +{ + if (phb->msi_domain) + irq_domain_remove(phb->msi_domain); + if (phb->dev_domain) + irq_domain_remove(phb->dev_domain); + if (phb->fwnode) + irq_domain_free_fwnode(phb->fwnode); +} + static void rtas_msi_pci_irq_fixup(struct pci_dev *pdev) { /* No LSI -> leave MSIs (if any) configured */ diff --git a/arch/powerpc/platforms/pseries/pci_dlpar.c b/arch/powerpc/pl= atforms/pseries/pci_dlpar.c index f9ae17e8a0f4..cf8a2e7a0f2c 100644 --- a/arch/powerpc/platforms/pseries/pci_dlpar.c +++ b/arch/powerpc/platforms/pseries/pci_dlpar.c @@ -33,6 +33,8 @@ struct pci_controller *init_phb_dynamic(struct device_n= ode *dn) =20 pci_devs_phb_init_dynamic(phb); =20 + pseries_msi_allocate_domains(phb); + /* Create EEH devices for the PHB */ eeh_phb_pe_create(phb); =20 @@ -73,6 +75,8 @@ int remove_phb_dynamic(struct pci_controller *phb) } } =20 + pseries_msi_free_domains(phb); + /* Remove the PCI bus and unregister the bridge device from sysfs */ phb->bus =3D NULL; pci_remove_bus(b); --=20 2.26.3